<\/ins><\/p>\n\n\n\nA. Kh\u00f4ng kh\u00ed kh\u00f4 n\u1eb7ng h\u01a1n. V\u00ec c\u00f9ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t th\u00ec kh\u00f4ng kh\u00ed c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn h\u01a1n.<\/p>\n\n\n\n
B. Kh\u00f4ng kh\u00ed \u1ea9m n\u1eb7ng h\u01a1n. V\u00ec c\u00f9ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t th\u00ec n\u01b0\u1edbc c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn h\u01a1n.<\/p>\n\n\n\n
C. Kh\u00f4ng kh\u00ed kh\u00f4 n\u1eb7ng h\u01a1n. V\u00ec \u1edf c\u00f9ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t th\u00ec kh\u00f4ng \nkh\u00ed kh\u00f4 c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang l\u1edbn h\u01a1n kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a kh\u00f4ng kh\u00ed \u1ea9m.<\/p>\n\n\n\n
D. Kh\u00f4ng kh\u00ed \u1ea9m n\u1eb7ng h\u01a1n. V\u00ec \u1edf c\u00f9ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t th\u00ec kh\u00f4ng kh\u00ed\n \u1ea9m c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang l\u1edbn h\u01a1n kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a kh\u00f4ng kh\u00ed kh\u00f4.<\/p>\n\n\n\n
L\u1eddi gi\u1ea3i:<\/strong><\/p>\n\n\n\nCh\u1ecdn C.<\/p>\n\n\n\n
H2<\/sub>O c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng mol = 2+16 = 18 g\/mol<\/p>\n\n\n\nKh\u00f4ng kh\u00ed c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng mol trung b\u00ecnh l\u00e0 29 (ch\u1ee7 y\u1ebfu l\u00e0 N2<\/sub> c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng mol l\u00e0 2*14 =28) <\/p>\n\n\n\n\u1ede c\u00f9ng \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 \u00e1p su\u1ea5t th\u00ec: kh\u00f4ng kh\u00ed \u1ea9m c\u00f3 h\u00e0m l\u01b0\u1ee3ng H2<\/sub>O nhi\u1ec1u h\u01a1n, hay h\u00e0m l\u01b0\u1ee3ng N2<\/sub> th\u1ea5p h\u01a1n do \u0111\u00f3 c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang nh\u1ecf h\u01a1n kh\u00f4ng kh\u00ed kh\u00f4 (ch\u1ee7 y\u1ebfu l\u00e0 N2<\/sub>). <\/p>\n\n\n\nB\u00e0i 7 (trang 214 SGK V\u1eadt L\u00fd 10) :<\/strong> M\u1eb7t ngo\u00e0i c\u1ee7a m\u1ed9t c\u1ed1c th\u1ee7y tinh \u0111ang \u0111\u1ef1ng n\u01b0\u1edbc \u0111\u00e1 th\u01b0\u1eddng c\u00f3 n\u01b0\u1edbc \u0111\u1ecdng th\u00e0nh gi\u1ecdt v\u00e0 l\u00e0m \u01b0\u1edbt m\u1eb7t c\u1ed1c. Gi\u1ea3i th\u00edch t\u1ea1i sao?<\/p>\n\n\n\nL\u1eddi gi\u1ea3i:<\/strong><\/ins><\/p>\n\n\n\nTrong kh\u00f4ng kh\u00ed lu\u00f4n t\u1ed3n t\u1ea1i h\u01a1i n\u01b0\u1edbc. Khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m \u0111\u1ebfn m\u1ed9t gi\u00e1 tr\u1ecb n\u00e0o \u0111\u00f3 th\u00ec h\u01a1i n\u01b0\u1edbc trong l\u1edbp kh\u00f4ng kh\u00ed \u1edf s\u00e1t m\u1eb7t ngo\u00e0i c\u1ed1c th\u1ee7y tinh tr\u1edf n\u00ean b\u00e3o h\u00f2a v\u00e0 \u0111\u1ecdng l\u1ea1i th\u00e0nh s\u01b0\u01a1ng, t\u1ea1o th\u00e0nh gi\u1ecdt l\u00e0m \u01b0\u1edbt m\u1eb7t ngo\u00e0i c\u1ee7a th\u00e0nh c\u1ed1c.<\/p>\n\n\n\n
B\u00e0i 8 (trang 214 SGK V\u1eadt L\u00fd 10) :<\/strong> Kh\u00f4ng kh\u00ed \u1edf 30o<\/sup>C c\u00f3 \u0111\u1ed9 \u1ea9m tuy\u1ec7t \u0111\u1ed1i l\u00e0 21,53 g\/m3<\/sup>. H\u00e3y x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 \u1ea9m c\u1ef1c \u0111\u1ea1i v\u00e0 suy ra \u0111\u1ed9 \u1ea9m t\u1ec9 \u0111\u1ed1i c\u1ee7a kh\u00f4ng kh\u00ed \u1edf 30o<\/sup>C.<\/p>\n\n\n\nL\u1eddi gi\u1ea3i:<\/strong><\/ins><\/p>\n\n\n\nTheo \u0111\u1ec1 b\u00e0i \u0111\u00e3 cho : \u1ede 30o<\/sup>C \u0111\u1ed9 \u1ea9m tuy\u1ec7t \u0111\u1ed1i c\u1ee7a kh\u00f4ng kh\u00ed l\u00e0 :<\/p>\n\n\n\na = 21,53 g\/m3<\/sup><\/p>\n\n\n\nTra b\u1ea3ng 39.1(SGK) ta th\u1ea5y \u1edf 30o<\/sup>C kh\u00f4ng kh\u00ed c\u00f3 \u0111\u1ed9 \u1ea9m c\u1ef1c \u0111\u1ea1i l\u00e0 : <\/p>\n\n\n\nA = 30,29 g\/m3<\/sup><\/p>\n\n\n\n(\u0110\u1ed9 \u1ea9m c\u1ef1c \u0111\u1ea1i A c\u00f3 \u0111\u1ed9 l\u1edbn b\u1eb1ng kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a h\u01a1i n\u01b0\u1edbc b\u00e3o h\u00f2a t\u00ednh theo \u0111\u01a1n v\u1ecb g\/m3<\/sup>. Gi\u00e1 tr\u1ecb c\u1ee7a A t\u0103ng theo nhi\u1ec7t \u0111\u1ed9). V\u1eady \u0111\u1ed9 \u1ea9m t\u1ec9 \u0111\u1ed1i c\u1ee7a kh\u00f4ng kh\u00ed \u1edf 30o<\/sup>C l\u00e0 : <\/p>\n\n\n\n