T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 1 – Arkady Leokum<\/p>\n\n\n\n
Ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 nh\u1ecbn u\u1ed1ng m\u1ed9t ng\u00e0y hay h\u01a1n m\u1ed9t ng\u00e0y, c\u00f3 th\u1ec3 nh\u1ecbn \u0103n c\u1ea3 tu\u1ea7n l\u1ec5, th\u1eadm ch\u00ed c\u1ea3 th\u00e1ng m\u00e0 v\u1eabn s\u1ed1ng. Nh\u01b0ng nh\u1ecbn th\u1edf \u0111\u01b0\u1ee3c bao l\u00e2u? N\u0103m \u0111\u1ebfn m\u01b0\u1eddi ph\u00fat l\u00e0 qu\u00e1. C\u00f3 m\u1ed9t ch\u1ea5t r\u1ea5t c\u1ea7n cho s\u1ef1 s\u1ed1ng con ng\u01b0\u1eddi, \u0111\u00f3 l\u00e0 kh\u00ed oxy.<\/p>\n\n\n\n
Kh\u00ed oxy l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean t\u1ed1 d\u1ed3i d\u00e0o nh\u1ea5t trong thi\u00ean nhi\u00ean. N\u00f3 g\u00f3p ph\u1ea7n m\u1ed9t n\u1eeda th\u00e0nh ph\u1ea7n t\u1ea1o n\u00ean v\u1ecf \u0111\u1ecba c\u1ea7u v\u00e0 m\u1ed9t ph\u1ea7n n\u0103m b\u1ea7u kh\u00ed quy\u1ec3n. Ta h\u00edt kh\u00f4ng kh\u00ed trong \u0111\u00f3 c\u00f3 oxy – v\u00e0o ph\u1ed5i. Kh\u00ed oxy \u0111\u01b0\u1ee3c c\u00e1c h\u1ed3ng huy\u1ebft c\u1ea7u \u201cch\u1edf\u201d \u0111i – qua c\u00e1c m\u1ea1ch m\u00e1u – \u0111\u1ebfn kh\u1eafp n\u01a1i trong c\u01a1 th\u1ec3 \u0111\u1ec3 nu\u00f4i d\u01b0\u1ee1ng c\u00e1c t\u1ebf b\u00e0o. Khi oxy \u201c\u0111\u1ed1t ch\u00e1y\u201d th\u1ef1c ph\u1ea9m \u0111\u1ec3 t\u1ea1o ra nhi\u1ec7t c\u1ea7n thi\u1ebft cho s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c c\u01a1 quan trong th\u00e2n th\u1ec3 con ng\u01b0\u1eddi.<\/p>\n\n\n\n
Kh\u00ed oxy r\u1ea5t \u201cd\u1ec5 t\u00e1nh\u201d. N\u00f3 s\u1eb5n s\u00e0ng k\u1ebft h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c nguy\u00ean t\u1ed1. Qu\u00e1 tr\u00ecnh k\u1ebft h\u1ee3p n\u00e0y g\u1ecdi l\u00e0 \u201coxyt h\u00f3a\u201d. Khi s\u1ef1 oxyt h\u00f3a di\u1ec5n ra mau l\u1eb9, ta g\u1ecdi l\u00e0 s\u1ef1 ch\u00e1y. Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, oxyt h\u00f3a \u0111\u1ec1u c\u00f3 s\u1ef1 t\u1ecfa nhi\u1ec7t. Khi s\u1ef1 t\u1ecfa nhi\u1ec7t n\u00e0y di\u1ec5n ra nhanh \u0111\u1ebfn n\u1ed7i kh\u00f4ng c\u00f3 th\u00ec gi\u1edd \u0111\u1ec3 t\u1ecfa ra k\u1ecbp th\u00ec nhi\u1ec7t \u0111\u1ed9 t\u0103ng l\u00ean r\u1ea5t cao v\u00e0 l\u00fac \u0111\u00f3 xu\u1ea5t hi\u1ec7n ng\u1ecdn l\u1eeda. V\u1eady, \u1edf \u0111o\u1ea1n \u0111\u1ea7u ta c\u00f3 s\u1ef1 ch\u00e1y, s\u1ef1 oxyt h\u00f3a nhanh, t\u1ea1o ra l\u1eeda. \u1ede \u0111o\u1ea1n cu\u1ed1i, ta l\u1ea1i c\u00f3 oxyt h\u00f3a \u201c\u0111\u1ed1t ch\u00e1y\u201d th\u1ef1c ph\u1ea9m trong c\u01a1 th\u1ec3 \u0111\u1ec3 duy tr\u00ec s\u1ef1 s\u1ed1ng. Nh\u01b0ng s\u1ef1 ch\u00e1y ch\u1eadm b\u1eb1ng kh\u00ed oxy trong kh\u00f4ng kh\u00ed th\u00ec di\u1ec5n ra m\u1ecdi n\u01a1i, m\u1ecdi l\u00fac. S\u1eaft b\u1ecb r\u1ec9, s\u01a1n b\u1ecb kh\u00f4, r\u01b0\u1ee3u h\u00f3a th\u00e0nh d\u1ea5m\u2026 t\u1ea5t c\u1ea3 \u0111\u1ec1u ch\u1ec9 l\u00e0 s\u1ef1 oxyt h\u00f3a m\u00e0 th\u00f4i.<\/p>\n\n\n\n
Kh\u00f4ng kh\u00ed ta th\u1edf h\u00e0ng ng\u00e0y pha tr\u1ed9n kh\u00ed nit\u01a1 v\u1edbi oxy. Ta c\u00f3 th\u1ec3 t\u1ea1o ra kh\u00ed oxy nguy\u00ean ch\u1ea5t t\u1eeb kh\u00f4ng kh\u00ed b\u1eb1ng c\u00e1ch l\u00e0m l\u1ea1nh kh\u00f4ng kh\u00ed \u1edf nhi\u1ec7t \u0111\u1ed9 r\u1ea5t th\u1ea5p, khi\u1ebfn cho kh\u00f4ng kh\u00ed h\u00f3a l\u1ecfng. Nhi\u1ec7t \u0111\u1ed9 \u1ea5y l\u00e0 3000 Fahrenhelt. Khi kh\u00f4ng kh\u00ed l\u1ecfng \u0111\u01b0\u1ee3c l\u00e0m cho \u1ea5m d\u1ea7n, n\u00f3 s\u1ebd s\u00f4i l\u00ean, l\u00fac \u0111\u00f3, kh\u00ed nit\u01a1 b\u1ed1c h\u01a1i, c\u00f2n l\u1ea1i l\u00e0 kh\u00ed oxy. Nhi\u1ec1u ng\u01b0\u1eddi b\u1ecb b\u1ec7nh ph\u1ed5i \u0111\u01b0\u1ee3c c\u1ee9u s\u1ed1ng nh\u1edd th\u1edf kh\u00ed oxy n\u00e0y m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: H\u00e3y Tr\u1ea3 L\u1eddi Em T\u1ea1i Sao? \u2013 T\u1eadp 1 – Arkady Leokum Ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 nh\u1ecbn u\u1ed1ng m\u1ed9t ng\u00e0y hay h\u01a1n m\u1ed9t ng\u00e0y, c\u00f3 th\u1ec3 nh\u1ecbn \u0103n c\u1ea3 tu\u1ea7n l\u1ec5, th\u1eadm ch\u00ed c\u1ea3 th\u00e1ng m\u00e0 v\u1eabn s\u1ed1ng. Nh\u01b0ng nh\u1ecbn th\u1edf \u0111\u01b0\u1ee3c bao l\u00e2u? N\u0103m \u0111\u1ebfn m\u01b0\u1eddi ph\u00fat l\u00e0 qu\u00e1. C\u00f3 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15],"tags":[],"class_list":["post-13546","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/13546","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=13546"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/13546\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=13546"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=13546"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=13546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}