{"id":379073,"date":"2024-08-27T16:10:07","date_gmt":"2024-08-27T09:10:07","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=379073"},"modified":"2024-08-27T16:10:07","modified_gmt":"2024-08-27T09:10:07","slug":"dong-vi-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/dong-vi-la-gi\/","title":{"rendered":"\u0110\u1ed3ng v\u1ecb l\u00e0 g\u00ec? C\u00e1c d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 \u0111\u1ed3ng v\u1ecb H\u00f3a 10"},"content":{"rendered":"<p><strong>Trong h\u00f3a h\u1ecdc, kh\u00e1i ni\u1ec7m \u0111\u1ed3ng v\u1ecb l\u00e0 g\u00ec r\u1ea5t quan tr\u1ecdng. N\u00f3 gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u1ea5u tr\u00fac nguy\u00ean t\u1eed v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1.\u00a0Vi\u1ec7c nghi\u00ean c\u1ee9u \u0111\u1ed3ng v\u1ecb gi\u00fap n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 nguy\u00ean t\u1eed. N\u00f3 c\u00f2n m\u1edf ra nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong y h\u1ecdc, \u0111\u1ecba ch\u1ea5t v\u00e0 v\u1eadt l\u00fd h\u1ea1t nh\u00e2n.\u00a0Trong ch\u01b0\u01a1ng tr\u00ecnh H\u00f3a h\u1ecdc l\u1edbp 10, h\u1ecdc sinh s\u1ebd l\u00e0m quen v\u1edbi c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 \u0111\u1ed3ng v\u1ecb. C\u00e1c b\u00e0i t\u1eadp bao g\u1ed3m t\u00ednh to\u00e1n kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed trung b\u00ecnh v\u00e0 x\u00e1c \u0111\u1ecbnh th\u00e0nh ph\u1ea7n ph\u1ea7n tr\u0103m c\u1ee7a c\u00e1c \u0111\u1ed3ng v\u1ecb. H\u1ecdc sinh c\u0169ng s\u1ebd \u00e1p d\u1ee5ng ki\u1ebfn th\u1ee9c v\u00e0o c\u00e1c b\u00e0i to\u00e1n th\u1ef1c t\u1ebf.<\/strong><\/p>\n<h2>\u0110\u1ed3ng v\u1ecb l\u00e0 g\u00ec?<\/h2>\n<div class=\"content user-select-text\" aria-label=\"Sent by Copilot: \u0110\u1ed3ng v\u1ecb l\u00e0 c\u00e1c bi\u1ebfn th\u1ec3 c\u1ee7a m\u1ed9t nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc, trong \u0111\u00f3 c\u00e1c nguy\u00ean t\u1eed c\u00f3 c\u00f9ng s\u1ed1 proton nh\u01b0ng kh\u00e1c nhau v\u1ec1 s\u1ed1 neutron. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 s\u1ed1 kh\u1ed1i c\u1ee7a c\u00e1c \u0111\u1ed3ng v\u1ecb. V\u00ed d\u1ee5, nguy\u00ean t\u1ed1 carbon c\u00f3 ba \u0111\u1ed3ng v\u1ecb ph\u1ed5 bi\u1ebfn l\u00e0 $$^{12}C$$, $$^{13}C$$ v\u00e0 $$^{14}C$$, v\u1edbi s\u1ed1 neutron l\u1ea7n l\u01b0\u1ee3t l\u00e0 6, 7 v\u00e0 8. C\u00e1c \u0111\u1ed3ng v\u1ecb c\u1ee7a m\u1ed9t nguy\u00ean t\u1ed1 c\u00f3 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc gi\u1ed1ng nhau nh\u01b0ng c\u00f3 th\u1ec3 c\u00f3 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd kh\u00e1c nhau do s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng. \u0110i\u1ec1u n\u00e0y l\u00e0m cho \u0111\u1ed3ng v\u1ecb tr\u1edf th\u00e0nh m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c nh\u01b0 y h\u1ecdc, \u0111\u1ecba ch\u1ea5t v\u00e0 v\u1eadt l\u00fd h\u1ea1t nh\u00e2n. Trong y h\u1ecdc, \u0111\u1ed3ng v\u1ecb ph\u00f3ng x\u1ea1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ch\u1ea9n \u0111o\u00e1n v\u00e0 \u0111i\u1ec1u tr\u1ecb b\u1ec7nh. V\u00ed d\u1ee5, \u0111\u1ed3ng v\u1ecb $$^{131}I$$ \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111i\u1ec1u tr\u1ecb b\u1ec7nh c\u01b0\u1eddng gi\u00e1p v\u00e0 ung th\u01b0 tuy\u1ebfn gi\u00e1p. Trong \u0111\u1ecba ch\u1ea5t, c\u00e1c nh\u00e0 khoa h\u1ecdc s\u1eed d\u1ee5ng \u0111\u1ed3ng v\u1ecb \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh tu\u1ed5i c\u1ee7a c\u00e1c m\u1eabu \u0111\u00e1 v\u00e0 h\u00f3a th\u1ea1ch th\u00f4ng qua ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecbnh tu\u1ed5i b\u1eb1ng \u0111\u1ed3ng v\u1ecb ph\u00f3ng x\u1ea1. \u0110\u1ed3ng v\u1ecb $$^{14}C$$, v\u1edbi chu k\u1ef3 b\u00e1n r\u00e3 kho\u1ea3ng 5730 n\u0103m, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh tu\u1ed5i c\u1ee7a c\u00e1c m\u1eabu h\u1eefu c\u01a1 c\u1ed5 \u0111\u1ea1i. Trong v\u1eadt l\u00fd h\u1ea1t nh\u00e2n, \u0111\u1ed3ng v\u1ecb \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n n\u0103ng l\u01b0\u1ee3ng h\u1ea1t nh\u00e2n. C\u00e1c \u0111\u1ed3ng v\u1ecb nh\u01b0 $$^{235}U$$ v\u00e0 $$^{239}Pu$$ \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m nhi\u00ean li\u1ec7u trong c\u00e1c l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n. Ngo\u00e0i ra, \u0111\u1ed3ng v\u1ecb c\u00f2n c\u00f3 \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nh\u01b0 n\u00f4ng nghi\u1ec7p, m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u00f4ng nghi\u1ec7p. Trong n\u00f4ng nghi\u1ec7p, \u0111\u1ed3ng v\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 nghi\u00ean c\u1ee9u qu\u00e1 tr\u00ecnh h\u1ea5p th\u1ee5 dinh d\u01b0\u1ee1ng c\u1ee7a c\u00e2y tr\u1ed3ng. Trong m\u00f4i tr\u01b0\u1eddng, \u0111\u1ed3ng v\u1ecb gi\u00fap theo d\u00f5i v\u00e0 ph\u00e2n t\u00edch s\u1ef1 di chuy\u1ec3n c\u1ee7a c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m. Trong c\u00f4ng nghi\u1ec7p, \u0111\u1ed3ng v\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. Nh\u01b0 v\u1eady, \u0111\u1ed3ng v\u1ecb kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong h\u00f3a h\u1ecdc m\u00e0 c\u00f2n c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong cu\u1ed9c s\u1ed1ng. Vi\u1ec7c hi\u1ec3u r\u00f5 v\u1ec1 \u0111\u1ed3ng v\u1ecb v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang gi\u00fap ch\u00fang ta n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c v\u00e0 \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau.\">\n<div class=\"ac-container ac-adaptiveCard has-image\">\n<div class=\"ac-textBlock\">\n<p>\u0110\u1ed3ng v\u1ecb l\u00e0 c\u00e1c d\u1ea1ng kh\u00e1c nhau c\u1ee7a c\u00f9ng m\u1ed9t nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc. C\u00e1c nguy\u00ean t\u1eed trong \u0111\u1ed3ng v\u1ecb c\u00f3 c\u00f9ng s\u1ed1 proton nh\u01b0ng kh\u00e1c nhau v\u1ec1 s\u1ed1 neutron. S\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c nhau v\u1ec1 s\u1ed1 kh\u1ed1i c\u1ee7a c\u00e1c \u0111\u1ed3ng v\u1ecb. M\u1eb7c d\u00f9 c\u00e1c \u0111\u1ed3ng v\u1ecb c\u1ee7a m\u1ed9t nguy\u00ean t\u1ed1 c\u00f3 t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc gi\u1ed1ng nhau, ch\u00fang c\u00f3 th\u1ec3 c\u00f3 t\u00ednh ch\u1ea5t v\u1eadt l\u00fd kh\u00e1c nhau do s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng. \u0110\u1ed3ng v\u1ecb tr\u1edf th\u00e0nh m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c nh\u01b0 y h\u1ecdc, \u0111\u1ecba ch\u1ea5t v\u00e0 v\u1eadt l\u00fd h\u1ea1t nh\u00e2n.<\/p>\n<p>Trong y h\u1ecdc, \u0111\u1ed3ng v\u1ecb ph\u00f3ng x\u1ea1 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i. Ch\u00fang gi\u00fap ch\u1ea9n \u0111o\u00e1n v\u00e0 \u0111i\u1ec1u tr\u1ecb b\u1ec7nh. \u0110\u1ed3ng v\u1ecb ph\u00f3ng x\u1ea1 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 \u0111i\u1ec1u tr\u1ecb c\u01b0\u1eddng gi\u00e1p v\u00e0 ung th\u01b0 tuy\u1ebfn gi\u00e1p. Trong \u0111\u1ecba ch\u1ea5t, \u0111\u1ed3ng v\u1ecb \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh tu\u1ed5i c\u1ee7a \u0111\u00e1 v\u00e0 h\u00f3a th\u1ea1ch. Trong v\u1eadt l\u00fd h\u1ea1t nh\u00e2n, \u0111\u1ed3ng v\u1ecb r\u1ea5t quan tr\u1ecdng. Ch\u00fang \u0111\u01b0\u1ee3c d\u00f9ng trong nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n n\u0103ng l\u01b0\u1ee3ng h\u1ea1t nh\u00e2n. C\u00e1c \u0111\u1ed3ng v\u1ecb nh\u01b0 uranium v\u00e0 plutonium l\u00e0 nhi\u00ean li\u1ec7u cho l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n.<\/p>\n<figure id=\"attachment_379584\" aria-describedby=\"caption-attachment-379584\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-1-1024x576.jpg.webp 1024w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-1-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-1-768x432.jpg.webp 768w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-1.jpg.webp 1280w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-379584 size-large webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-1-1024x576.jpg\" alt=\"dong-vi-la-gi-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-1-1024x576.jpg 1024w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-1-768x432.jpg 768w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-1.jpg 1280w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-379584\" class=\"wp-caption-text\">\u0110\u1ed3ng v\u1ecb l\u00e0 c\u00e1c d\u1ea1ng kh\u00e1c nhau c\u1ee7a c\u00f9ng m\u1ed9t nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc<\/figcaption><\/figure>\n<p>\u0110\u1ed3ng v\u1ecb c\u00f2n c\u00f3 \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c. Trong n\u00f4ng nghi\u1ec7p, \u0111\u1ed3ng v\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 nghi\u00ean c\u1ee9u qu\u00e1 tr\u00ecnh h\u1ea5p th\u1ee5 dinh d\u01b0\u1ee1ng c\u1ee7a c\u00e2y tr\u1ed3ng. Trong m\u00f4i tr\u01b0\u1eddng, \u0111\u1ed3ng v\u1ecb gi\u00fap theo d\u00f5i v\u00e0 ph\u00e2n t\u00edch s\u1ef1 di chuy\u1ec3n c\u1ee7a c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m. Trong c\u00f4ng nghi\u1ec7p, \u0111\u1ed3ng v\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y v\u00e0 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. Vi\u1ec7c hi\u1ec3u r\u00f5 v\u1ec1 \u0111\u1ed3ng v\u1ecb l\u00e0 g\u00ec v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang gi\u00fap ch\u00fang ta \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau.<\/p>\n<h2>Nh\u1eefng kh\u00e1i ni\u1ec7m n\u00ean t\u00ecm hi\u1ec3u \u0111\u1ec3 t\u00ednh ph\u1ea7n tr\u0103m \u0111\u1ed3ng v\u1ecb<\/h2>\n<p>\u0110\u1ec3 t\u00ednh to\u00e1n ph\u1ea7n tr\u0103m \u0111\u1ed3ng v\u1ecb, ch\u00fang ta c\u1ea7n n\u1eafm v\u1eefng m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n, g\u1ed3m kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed trung b\u00ecnh, s\u1ed1 kh\u1ed1i, v\u00e0 th\u00e0nh ph\u1ea7n ph\u1ea7n tr\u0103m c\u1ee7a c\u00e1c \u0111\u1ed3ng v\u1ecb. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap ch\u00fang ta t\u00ednh to\u00e1n ch\u00ednh x\u00e1c. N\u00f3 c\u00f2n m\u1edf ra nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 y h\u1ecdc, \u0111\u1ecba ch\u1ea5t v\u00e0 v\u1eadt l\u00fd h\u1ea1t nh\u00e2n. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n n\u00e0y \u0111\u1ec3 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 nh\u00e9.<\/p>\n<h3>Nguy\u00ean t\u1eed<\/h3>\n<p>Nguy\u00ean t\u1eed l\u00e0 th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n v\u00e0 nh\u1ecf nh\u1ea5t c\u1ee7a m\u1ed9t nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc, gi\u1eef t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1eb7c t\u00ednh h\u00f3a h\u1ecdc c\u1ee7a nguy\u00ean t\u1ed1 \u0111\u00f3. M\u1ed7i nguy\u00ean t\u1eed bao g\u1ed3m ba lo\u1ea1i h\u1ea1t ch\u00ednh: proton, neutron v\u00e0 electron. H\u1ea1t nh\u00e2n c\u1ee7a nguy\u00ean t\u1eed n\u1eb1m \u1edf trung t\u00e2m, bao g\u1ed3m proton v\u00e0 neutron. Proton c\u00f3 \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng, trong khi neutron kh\u00f4ng c\u00f3 \u0111i\u1ec7n t\u00edch. S\u1ed1 l\u01b0\u1ee3ng proton trong h\u1ea1t nh\u00e2n x\u00e1c \u0111\u1ecbnh lo\u1ea1i nguy\u00ean t\u1ed1 c\u1ee7a nguy\u00ean t\u1eed c\u1ee7a nguy\u00ean t\u1ed1. N\u00f3 x\u00e1c \u0111\u1ecbnh b\u1ea3n ch\u1ea5t c\u1ee7a nguy\u00ean t\u1ed1 \u0111\u00f3. V\u00ed d\u1ee5, t\u1ea5t c\u1ea3 c\u00e1c nguy\u00ean t\u1eed c\u00f3 6 proton \u0111\u1ec1u l\u00e0 nguy\u00ean t\u1eed c\u1ee7a carbon. C\u00e1c nguy\u00ean t\u1eed c\u00f3 8 proton l\u00e0 c\u1ee7a oxy.<\/p>\n<figure id=\"attachment_379585\" aria-describedby=\"caption-attachment-379585\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-2.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-2-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-2-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"size-full wp-image-379585 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-2.jpg\" alt=\"dong-vi-la-gi-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-379585\" class=\"wp-caption-text\">Nguy\u00ean t\u1eed trong \u0111\u1ed3ng v\u1ecb l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p>Xung quanh h\u1ea1t nh\u00e2n l\u00e0 c\u00e1c electron. C\u00e1c electron mang \u0111i\u1ec7n t\u00edch \u00e2m. Ch\u00fang di chuy\u1ec3n nhanh ch\u00f3ng trong c\u00e1c qu\u1ef9 \u0111\u1ea1o ho\u1eb7c v\u00f9ng kh\u00f4ng gian xung quanh h\u1ea1t nh\u00e2n. M\u1eb7c d\u00f9 c\u00e1c electron c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng r\u1ea5t nh\u1ecf so v\u1edbi proton v\u00e0 neutron, ch\u00fang \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng. Ch\u00fang x\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc c\u1ee7a nguy\u00ean t\u1ed1. S\u1ef1 ph\u00e2n b\u1ed1 v\u00e0 t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c electron quy\u1ebft \u0111\u1ecbnh c\u00e1ch m\u00e0 nguy\u00ean t\u1eed n\u00e0y k\u1ebft h\u1ee3p v\u1edbi nguy\u00ean t\u1eed kh\u00e1c. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra c\u00e1c ph\u00e2n t\u1eed v\u00e0 h\u1ee3p ch\u1ea5t.<\/p>\n<p>M\u1ed7i nguy\u00ean t\u1ed1 tr\u00ean b\u1ea3ng tu\u1ea7n ho\u00e0n l\u00e0 m\u1ed9t lo\u1ea1i nguy\u00ean t\u1eed ri\u00eang bi\u1ec7t v\u1edbi s\u1ed1 proton c\u1ee5 th\u1ec3. C\u00e1c nguy\u00ean t\u1eed c\u1ee7a c\u00f9ng m\u1ed9t nguy\u00ean t\u1ed1 c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i d\u01b0\u1edbi d\u1ea1ng c\u00e1c \u0111\u1ed3ng v\u1ecb kh\u00e1c nhau. \u0110\u1ed3ng v\u1ecb c\u1ee7a m\u1ed9t nguy\u00ean t\u1ed1 c\u00f3 c\u00f9ng s\u1ed1 proton nh\u01b0ng kh\u00e1c nhau v\u1ec1 s\u1ed1 neutron trong h\u1ea1t nh\u00e2n. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng.<\/p>\n<h3>Nguy\u00ean t\u1eed kh\u1ed1i<\/h3>\n<p>Nguy\u00ean t\u1eed kh\u1ed1i \u0111\u1ea1i di\u1ec7n cho kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t nguy\u00ean t\u1eed. \u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng kh\u1ed1i l\u01b0\u1ee3ng n\u00e0y l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed, vi\u1ebft t\u1eaft l\u00e0 amu. \u0110\u1ed1i v\u1edbi m\u1ed9t nguy\u00ean t\u1ed1, nguy\u00ean t\u1eed kh\u1ed1i l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a c\u00e1c h\u1ea1t trong nguy\u00ean t\u1eed. C\u00e1c h\u1ea1t n\u00e0y bao g\u1ed3m proton, neutron v\u00e0 electron. Tuy nhi\u00ean, kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a electron r\u1ea5t nh\u1ecf so v\u1edbi proton v\u00e0 neutron. Do \u0111\u00f3, khi t\u00ednh to\u00e1n kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed, ng\u01b0\u1eddi ta th\u01b0\u1eddng ch\u1ec9 quan t\u00e2m \u0111\u1ebfn t\u1ed5ng s\u1ed1 proton v\u00e0 neutron trong h\u1ea1t nh\u00e2n.<\/p>\n<p>M\u1ed9t nguy\u00ean t\u1ed1 c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i d\u01b0\u1edbi nhi\u1ec1u d\u1ea1ng \u0111\u1ed3ng v\u1ecb kh\u00e1c nhau. Khi \u0111\u00f3, \u0111\u1ed3ng v\u1ecb l\u00e0 g\u00ec? Ch\u00fang c\u00f3 c\u00f9ng s\u1ed1 proton (s\u1ed1 nguy\u00ean t\u1eed) nh\u01b0ng kh\u00e1c nhau v\u1ec1 s\u1ed1 neutron trong h\u1ea1t nh\u00e2n. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t trong kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed c\u1ee7a c\u00e1c \u0111\u1ed3ng v\u1ecb. V\u00ed d\u1ee5, nguy\u00ean t\u1ed1 carbon c\u00f3 hai \u0111\u1ed3ng v\u1ecb ph\u1ed5 bi\u1ebfn l\u00e0 Carbon-12 (C-12) v\u00e0 Carbon-13 (C-13). \u0110\u1ed3ng v\u1ecb C-12 ch\u1ee9a 6 proton v\u00e0 6 neutron, v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng x\u1ea5p x\u1ec9 12 amu. Trong khi \u0111\u00f3, \u0111\u1ed3ng v\u1ecb C-13 c\u00f3 6 proton v\u00e0 7 neutron, v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng kho\u1ea3ng 13 amu.<\/p>\n<figure id=\"attachment_379586\" aria-describedby=\"caption-attachment-379586\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-3.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-3-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-3-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"size-full wp-image-379586 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-3.jpg\" alt=\"dong-vi-la-gi-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-379586\" class=\"wp-caption-text\">B\u1ea3ng tu\u1ea7n ho\u00e0n nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc<\/figcaption><\/figure>\n<p>Nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh c\u1ee7a m\u1ed9t nguy\u00ean t\u1ed1 tr\u00ean b\u1ea3ng tu\u1ea7n ho\u00e0n kh\u00f4ng ph\u1ea3i l\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t \u0111\u1ed3ng v\u1ecb c\u1ee5 th\u1ec3. Thay v\u00e0o \u0111\u00f3, \u0111\u00f3 l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u00f3 tr\u1ecdng s\u1ed1 c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed c\u00e1c \u0111\u1ed3ng v\u1ecb. Tr\u1ecdng s\u1ed1 n\u00e0y d\u1ef1a tr\u00ean t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m t\u1ef1 nhi\u00ean c\u1ee7a t\u1eebng \u0111\u1ed3ng v\u1ecb. V\u00ed d\u1ee5, carbon trong t\u1ef1 nhi\u00ean ch\u1ee7 y\u1ebfu t\u1ed3n t\u1ea1i \u1edf d\u1ea1ng C-12 (kho\u1ea3ng 98.9%) v\u00e0 m\u1ed9t ph\u1ea7n nh\u1ecf \u1edf d\u1ea1ng C-13 (kho\u1ea3ng 1.1%). V\u00ec v\u1eady, nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh c\u1ee7a carbon tr\u00ean b\u1ea3ng tu\u1ea7n ho\u00e0n l\u00e0 kho\u1ea3ng 12.01 amu.<\/p>\n<h3>Nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh<\/h3>\n<p>Nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u00f3 tr\u1ecdng s\u1ed1 c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng c\u00e1c \u0111\u1ed3ng v\u1ecb kh\u00e1c nhau c\u1ee7a m\u1ed9t nguy\u00ean t\u1ed1. N\u00f3 d\u1ef1a tr\u00ean t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m t\u1ef1 nhi\u00ean c\u1ee7a t\u1eebng \u0111\u1ed3ng v\u1ecb \u0111\u00f3. M\u1ed9t nguy\u00ean t\u1ed1 c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i \u1edf nhi\u1ec1u d\u1ea1ng \u0111\u1ed3ng v\u1ecb. M\u1ed7i d\u1ea1ng c\u00f3 s\u1ed1 l\u01b0\u1ee3ng neutron kh\u00e1c nhau v\u00e0 do \u0111\u00f3 c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng kh\u00e1c nhau. Nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh ph\u1ea3n \u00e1nh kh\u1ed1i l\u01b0\u1ee3ng &#8220;trung b\u00ecnh&#8221; c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed3ng v\u1ecb c\u1ee7a nguy\u00ean t\u1ed1. \u0110i\u1ec1u n\u00e0y t\u00ednh \u0111\u1ebfn t\u1ef7 l\u1ec7 xu\u1ea5t hi\u1ec7n c\u1ee7a ch\u00fang trong t\u1ef1 nhi\u00ean.<\/p>\n<p>C\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh c\u1ee7a m\u1ed9t nguy\u00ean t\u1ed1 \u0111\u1ed3ng v\u1ecb l\u00e0 g\u00ec? \u0110\u00f3 l\u00e0:<\/p>\n<p><strong>Nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh = \u2211(Nguy\u00ean t\u1eed kh\u1ed1i c\u1ee7a m\u1ed7i \u0111\u1ed3ng v\u1ecb x t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m c\u1ee7a \u0111\u1ed3ng v\u1ecb)<\/strong><\/p>\n<p>V\u00ed d\u1ee5, nguy\u00ean t\u1ed1 clo c\u00f3 hai \u0111\u1ed3ng v\u1ecb ph\u1ed5 bi\u1ebfn l\u00e0 Clo-35 v\u00e0 Clo-37. Trong t\u1ef1 nhi\u00ean, kho\u1ea3ng 75% c\u00e1c nguy\u00ean t\u1eed clo l\u00e0 Clo-35. Kho\u1ea3ng 25% l\u00e0 Clo-37. Do \u0111\u00f3, nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh c\u1ee7a clo l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng hai \u0111\u1ed3ng v\u1ecb n\u00e0y. Gi\u00e1 tr\u1ecb n\u00e0y c\u00f3 tr\u1ecdng s\u1ed1 d\u1ef1a tr\u00ean t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m c\u1ee7a ch\u00fang trong t\u1ef1 nhi\u00ean.<\/p>\n<figure id=\"attachment_379587\" aria-describedby=\"caption-attachment-379587\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-4.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-4-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-4-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-379587 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-4.jpg\" alt=\"dong-vi-la-gi-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-4-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-379587\" class=\"wp-caption-text\">Nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u00f3 tr\u1ecdng s\u1ed1 c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng c\u00e1c \u0111\u1ed3ng v\u1ecb kh\u00e1c nhau c\u1ee7a m\u1ed9t nguy\u00ean t\u1ed1<\/figcaption><\/figure>\n<p>Nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb tr\u00ean b\u1ea3ng tu\u1ea7n ho\u00e0n h\u00f3a h\u1ecdc nh\u01b0 m\u1ed9t s\u1ed1 th\u1eadp ph\u00e2n. N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t \u0111\u1ed3ng v\u1ecb c\u1ee5 th\u1ec3. N\u00f3 l\u00e0 gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a c\u00e1c \u0111\u1ed3ng v\u1ecb kh\u00e1c nhau c\u1ee7a nguy\u00ean t\u1ed1 \u0111\u00f3. Gi\u00e1 tr\u1ecb n\u00e0y gi\u00fap ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c h\u01a1n kh\u1ed1i l\u01b0\u1ee3ng th\u1ef1c t\u1ebf m\u00e0 nguy\u00ean t\u1ed1 \u0111\u00f3 c\u00f3 khi g\u1eb7p trong t\u1ef1 nhi\u00ean.<\/p>\n<h2>C\u00e1c b\u00e0i t\u1eadp v\u1ec1 d\u1ea1ng \u0111\u1ed3ng v\u1ecb l\u00e0 g\u00ec trong H\u00f3a 10<\/h2>\n<p>Trong ch\u01b0\u01a1ng tr\u00ecnh H\u00f3a h\u1ecdc l\u1edbp 10, c\u00e1c b\u00e0i t\u1eadp v\u1ec1 \u0111\u1ed3ng v\u1ecb l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng gi\u00fap h\u1ecdc sinh hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u1ea5u tr\u00fac nguy\u00ean t\u1eed v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1. H\u00e3y tham kh\u1ea3o c\u00e1c v\u00ed d\u1ee5 d\u01b0\u1edbi \u0111\u1ec3 c\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft v\u00e0 ph\u00e1t tri\u1ec3n k\u1ef9 n\u0103ng gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 v\u00e0 t\u01b0 duy logic.<\/p>\n<h3>V\u00ed d\u1ee5 1: T\u00ednh nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh<\/h3>\n<p>Trong t\u1ef1 nhi\u00ean, Clo (Cl) t\u1ed3n t\u1ea1i d\u01b0\u1edbi hai \u0111\u1ed3ng v\u1ecb ch\u00ednh l\u00e0: <sup>35<\/sup>Cl v\u00e0 <sup>37<\/sup>Cl. Kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed trung b\u00ecnh c\u1ee7a Clo l\u00e0 35,5. G\u1ecdi (x) l\u00e0 ph\u1ea7n tr\u0103m s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a <sup>35<\/sup>Cl. G\u1ecdi (y) l\u00e0 ph\u1ea7n tr\u0103m s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a <sup>37<\/sup>Cl. V\u00ec t\u1ed5ng ph\u1ea7n tr\u0103m c\u1ee7a hai \u0111\u1ed3ng v\u1ecb ph\u1ea3i b\u1eb1ng 100%, ta c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh \u0111\u1ea7u ti\u00ean l\u00e0 (x + y = 100). Ti\u1ebfp theo, ta s\u1eed d\u1ee5ng th\u00f4ng tin v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed trung b\u00ecnh \u0111\u1ec3 thi\u1ebft l\u1eadp ph\u01b0\u01a1ng tr\u00ecnh th\u1ee9 hai. Kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed trung b\u00ecnh c\u1ee7a Clo l\u00e0 35,5, do \u0111\u00f3 ph\u01b0\u01a1ng tr\u00ecnh th\u1ee9 hai s\u1ebd l\u00e0 (35x + 37y = 35.5 \\times 100).<\/p>\n<p>Gi\u1ea3i h\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh n\u00e0y, ta b\u1eaft \u0111\u1ea7u t\u1eeb ph\u01b0\u01a1ng tr\u00ecnh th\u1ee9 nh\u1ea5t \u0111\u1ec3 bi\u1ec3u di\u1ec5n (y) theo (x): (y = 100 &#8211; x). Thay gi\u00e1 tr\u1ecb n\u00e0y v\u00e0o ph\u01b0\u01a1ng tr\u00ecnh th\u1ee9 hai, ta c\u00f3: (35x + 37(100 &#8211; x) = 3550). Gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh n\u00e0y, ta thu \u0111\u01b0\u1ee3c: (35x + 3700 &#8211; 37x = 3550), hay (-2x + 3700 = 3550). T\u1eeb \u0111\u00f3, ta c\u00f3 (-2x = -150), v\u00e0 (x = 75). V\u1eady, ph\u1ea7n tr\u0103m s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a <sup>35<\/sup>Cl l\u00e0 75%. S\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb n\u00e0y, ta t\u00ednh \u0111\u01b0\u1ee3c (y = 100 &#8211; 75 = 25), t\u1ee9c l\u00e0 ph\u1ea7n tr\u0103m s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a <sup>37<\/sup>Cl l\u00e0 25%.<\/p>\n<figure id=\"attachment_379588\" aria-describedby=\"caption-attachment-379588\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-5.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-5-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-5-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-379588 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-5.jpg\" alt=\"dong-vi-la-gi-5\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-5.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-5-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-5-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-379588\" class=\"wp-caption-text\">V\u00ed d\u1ee5 t\u00ednh nguy\u00ean t\u1eed kh\u1ed1i trung b\u00ecnh c\u1ee7a hai \u0111\u1ed3ng v\u1ecb<\/figcaption><\/figure>\n<p>Ph\u1ea7n tr\u0103m s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a <sup>35<\/sup>Cl l\u00e0 75%. T\u1eeb \u0111\u00f3, ta t\u00ednh \u0111\u01b0\u1ee3c (y = 100 &#8211; 75 = 25). Ph\u1ea7n tr\u0103m s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a \u0111\u1ed3ng v\u1ecb <sup>37<\/sup>Cl l\u00e0 25%. Nh\u01b0 v\u1eady, Clo trong t\u1ef1 nhi\u00ean c\u00f3 75% s\u1ed1 nguy\u00ean t\u1eed l\u00e0 <sup>35<\/sup>Cl v\u00e0 25% l\u00e0 <sup>37<\/sup>Cl. B\u00e0i to\u00e1n n\u00e0y minh h\u1ecda c\u00e1ch s\u1eed d\u1ee5ng h\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0111\u1ed3ng v\u1ecb l\u00e0 g\u00ec v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed trung b\u00ecnh.<\/p>\n<h3>V\u00ed d\u1ee5 2: T\u00ednh s\u1ed1 nguy\u00ean t\u1eed<\/h3>\n<p>Trong t\u1ef1 nhi\u00ean, Clo (Cl) c\u00f3 hai \u0111\u1ed3ng v\u1ecb ch\u00ednh: <sup>35<\/sup>Cl v\u00e0 <sup>37<\/sup>Cl. Kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed trung b\u00ecnh c\u1ee7a Clo l\u00e0 35,5. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a \u0111\u1ed3ng v\u1ecb <sup>37<\/sup>Cl trong 3,65 g HCl, ch\u00fang ta c\u1ea7n th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 b\u01b0\u1edbc t\u00ednh to\u00e1n.<\/p>\n<p>Tr\u01b0\u1edbc h\u1ebft, t\u1ec9 l\u1ec7 s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a hai \u0111\u1ed3ng v\u1ecb <sup>35<\/sup>Cl v\u00e0 <sup>37<\/sup>Cl l\u00e0 3:1. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 trong m\u1ed7i 4 nguy\u00ean t\u1eed Clo, c\u00f3 3 nguy\u00ean t\u1eed l\u00e0 <sup>35<\/sup>Cl v\u00e0 1 nguy\u00ean t\u1eed l\u00e0 <sup>37<\/sup>Cl. Ti\u1ebfp theo, ta t\u00ednh s\u1ed1 mol c\u1ee7a HCl trong 3,65 g. Kh\u1ed1i l\u01b0\u1ee3ng mol c\u1ee7a HCl l\u00e0 36,5 (v\u00ec kh\u1ed1i l\u01b0\u1ee3ng mol c\u1ee7a H l\u00e0 1 v\u00e0 c\u1ee7a Cl l\u00e0 35,5). Do \u0111\u00f3, s\u1ed1 mol c\u1ee7a HCl l\u00e0: n<sub>HCl<\/sub>\u00a0= 0,1 =&gt; n<sub>Cl<\/sub> = 0,1.<\/p>\n<p>V\u00ec m\u1ed7i ph\u00e2n t\u1eed HCl ch\u1ee9a m\u1ed9t nguy\u00ean t\u1eed Clo, s\u1ed1 mol c\u1ee7a Clo c\u0169ng l\u00e0 0,1 mol. T\u1eeb t\u1ec9 l\u1ec7 3:1, ta t\u00ednh s\u1ed1 mol <sup>37<\/sup>Cl = 0,1.1\/(1+3) = 0,025. \u0110\u1ec3 t\u00ednh s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a \\(\\text{Cl}^{37}\\), ta nh\u00e2n s\u1ed1 mol v\u1edbi s\u1ed1 Avogadro. Ta c\u00f3 k\u1ebft qu\u1ea3: S\u1ed1 nguy\u00ean t\u1eed <sup>37<\/sup>Cl = 0,025.6,02.10<sup>23<\/sup>\u00a0= 1,505.10<sup>22\u00a0 <\/sup><\/p>\n<figure id=\"attachment_379589\" aria-describedby=\"caption-attachment-379589\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-6.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-6-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2024\/08\/dong-vi-la-gi-6-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-379589 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-6.jpg\" alt=\"dong-vi-la-gi-6\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-6.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-6-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2024\/08\/dong-vi-la-gi-6-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-379589\" class=\"wp-caption-text\">V\u00ed d\u1ee5 t\u00ednh s\u1ed1 nguy\u00ean t\u1eed trong b\u00e0i t\u1eadp \u0111\u1ed3ng v\u1ecb<\/figcaption><\/figure>\n<p>Nh\u01b0 v\u1eady, trong 3,65 g HCl, c\u00f3 1,505.10<sup>22\u00a0 <\/sup>\u00a0nguy\u00ean t\u1eed c\u1ee7a \u0111\u1ed3ng v\u1ecb <sup>37<\/sup>Cl. B\u00e0i to\u00e1n n\u00e0y minh h\u1ecda c\u00e1ch s\u1eed d\u1ee5ng t\u1ec9 l\u1ec7 \u0111\u1ed3ng v\u1ecb v\u00e0 s\u1ed1 Avogadro \u0111\u1ec3 t\u00ednh s\u1ed1 nguy\u00ean t\u1eed c\u1ee7a m\u1ed9t \u0111\u1ed3ng v\u1ecb trong m\u1ed9t m\u1eabu ch\u1ea5t. \u0110\u00e2y l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng quan tr\u1ecdng trong h\u00f3a h\u1ecdc, gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 th\u00e0nh ph\u1ea7n v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a c\u00e1c ch\u1ea5t h\u00f3a h\u1ecdc.<\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>T\u00f3m l\u1ea1i, \u0111\u1ed3ng v\u1ecb l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n nh\u01b0ng r\u1ea5t quan tr\u1ecdng. N\u1eafm \u0111\u01b0\u1ee3c kh\u00e1i ni\u1ec7m \u0111\u1ed3ng v\u1ecb l\u00e0 g\u00ec gi\u00fap ch\u00fang ta hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc, c\u0169ng nh\u01b0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang trong \u0111\u1eddi s\u1ed1ng v\u00e0 khoa h\u1ecdc. Hy v\u1ecdng nh\u1eefng th\u00f4ng tin n\u00e0y c\u00f3 th\u1ec3 gi\u00fap \u00edch b\u1ea1n trong vi\u1ec7c h\u1ecdc H\u00f3a c\u0169ng nh\u01b0 \u00e1p d\u1ee5ng v\u00e0o nhi\u1ec1u kh\u00eda c\u1ea1nh kh\u00e1c. \u0110\u1eebng qu\u00ean kh\u00e1m ph\u00e1 th\u00eam c\u00e1c th\u00f4ng tin h\u1eefu \u00edch kh\u00e1c d\u01b0\u1edbi \u0111\u00e2y nh\u00e9.<\/p>\n<p>XEM TH\u00caM:<\/p>\n<ul>\n<li><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/bang-tuan-hoan\/\"><strong>B\u1ea3ng tu\u1ea7n ho\u00e0n h\u00f3a h\u1ecdc r\u00f5 n\u00e9t \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t 2024<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/may-tinh-online-cong-cu-may-tinh-khoa-hoc-mien-phi\/\"><strong>M\u00e1y t\u00ednh online: c\u00f4ng c\u1ee5 m\u00e1y t\u00ednh khoa h\u1ecdc, mi\u1ec5n ph\u00ed<\/strong><\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Trong h\u00f3a h\u1ecdc, kh\u00e1i ni\u1ec7m \u0111\u1ed3ng v\u1ecb l\u00e0 g\u00ec r\u1ea5t quan tr\u1ecdng. N\u00f3 gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u1ea5u tr\u00fac nguy\u00ean t\u1eed v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a c\u00e1c nguy\u00ean t\u1ed1.\u00a0Vi\u1ec7c nghi\u00ean c\u1ee9u \u0111\u1ed3ng v\u1ecb gi\u00fap n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 nguy\u00ean t\u1eed. N\u00f3 c\u00f2n m\u1edf ra nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong y h\u1ecdc, [&hellip;]<\/p>\n","protected":false},"author":48,"featured_media":379583,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29235,3910],"tags":[],"class_list":["post-379073","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goc-to-mo","category-kham-pha"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0110\u1ed3ng v\u1ecb l\u00e0 g\u00ec? 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