{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"Nguy\u00ean t\u1eed X c\u00f3 nguy\u00ean t\u1eed kh\u1ed1i l\u00e0 40 \u0111vC. T\u00ean nguy\u00ean t\u1ed1 v\u00e0 k\u00fd hi\u1ec7u h\u00f3a h\u1ecdc l\u00e0 ","select":["A. $ Magie ( Mg )$ ","B. $ Canxi ( Ca )$ ","C. $ \u0110\u1ed3ng ( Cu )$ ","D. $ Nh\u00f4m ( Al )$ "],"hint":"","explain":"<span class='basic_left'>Nguy\u00ean t\u1eed kh\u1ed1i l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t nguy\u00ean t\u1eed t\u00ednh b\u1eb1ng \u0111\u01a1n v\u1ecb cacbon. M\u1ed7i nguy\u00ean t\u1ed1 c\u00f3 nguy\u00ean t\u1eed kh\u1ed1i ri\u00eang bi\u1ec7t( tra b\u1ea3ng 1\/SGK h\u00f3a 8\/42 )<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2010},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"Kh\u1ed1i l\u01b0\u1ee3ng theo \u0111\u01a1n v\u1ecb gam c\u1ee7a \u0110\u1ed3ng ( NTK = 64 \u0111vC ) l\u00e0 ","select":["A. ${{1,06272.10}^{-22}}$ gam ","B. ${{1,06272.10}^{-23}}$ gam ","C. ${{1,06272.10}^{-24}}$ gam ","D. ${{1,06272.10}^{-25}}$ gam "],"hint":"","explain":"<span class='basic_left'>Ta c\u00f3: ${{M}_{C}}=12dvc={{1,9926.10}^{-23}}$ gam (b\u00e0i 5:Nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc\/trang 18\/SGK H\u00f3a 8)<br\/>$1dvc={{1,6605.10}^{-24}}$ gam<br\/>$\\Rightarrow {{M}_{Cu}}=64dvc={{64.1,6605.10}^{-24}}={{1,06272.10}^{-22}}$ gam<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2011},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"Nguy\u00ean t\u1eed X c\u00f3 t\u1ed5ng s\u1ed1 h\u1ea1t b\u1eb1ng 49, trong \u0111\u00f3 s\u1ed1 h\u1ea1t mang \u0111i\u1ec7n nhi\u1ec1u h\u01a1n s\u1ed1 h\u1ea1t kh\u00f4ng mang \u0111i\u1ec7n l\u00e0 15. K\u00fd hi\u1ec7u h\u00f3a h\u1ecdc v\u00e0 nguy\u00ean t\u1eed kh\u1ed1i c\u1ee7a X l\u00e0 ","select":["A. $ N $ v\u00e0 $NTK = 14$ ","B. $ C $ v\u00e0 $NTK = 12$ ","C. $ O $ v\u00e0 $NTK = 16$ ","D. $ S $ v\u00e0 $NTK = 32$ "],"hint":"","explain":"<span class='basic_left'>Ta c\u00f3:<br\/>$\\left\\{ \\begin{aligned} & p+n+e=49 \\\\ & (p+e)-n=15 \\\\ \\end{aligned} \\right.$<br\/><br\/>$\\begin{aligned} & \\Rightarrow \\left\\{ \\begin{aligned} & 2p+n=49 \\\\ & 2p-n=15 \\\\ \\end{aligned} \\right. \\\\ & \\Rightarrow \\left\\{ \\begin{aligned} & p=16 \\\\ & n=17 \\\\ \\end{aligned} \\right. \\\\ \\end{aligned}$ <br\/>Tra b\u1ea3ng 1\/SGK h\u00f3a 8\/trang 42<br\/>X l\u00e0 l\u01b0u hu\u1ef3nh ( S ) v\u00e0 c\u00f3 NTK = 32<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2012},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"K\u00fd hi\u1ec7u h\u00f3a h\u1ecdc sau \u0111\u1ec1u bi\u1ec3u di\u1ec5n \u0111\u01a1n ch\u1ea5t ","select":["A. ${{H}_{2}},P,Mg,Na$ ","B. ${{H}_{2}}S{{O}_{4}},C{{H}_{4}},CuO,N{{a}_{2}}O$ ","C. ${{C}_{2}}{{H}_{2}},C,{{H}_{2}}O,{{O}_{2}}$ ","D. $Cu{{(OH)}_{2}},BaO,NaN{{O}_{3}},KCl$ "],"hint":"","explain":"<span class='basic_left'>\u0110\u01a1n ch\u1ea5t l\u00e0 nh\u1eefng ch\u1ea5t t\u1ea1o n\u00ean t\u1eeb m\u1ed9t nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2013},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Nguy\u00ean t\u1eed X n\u1eb7ng b\u1eb1ng t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a 2 nguy\u00ean t\u1eed Magie v\u00e0 L\u01b0u hu\u1ef3nh. K\u00fd hi\u1ec7u h\u00f3a h\u1ecdc c\u1ee7a X l\u00e0 ","select":["A. $Ag$ ","B. $Cr$ ","C. $Fe$ ","D. $Cu$ "],"hint":"","explain":"<span class='basic_left'>Nguy\u00ean t\u1eed kh\u1ed1i c\u1ee7a Magie l\u00e0: 24 dvC <br\/> Nguy\u00ean t\u1eed kh\u1ed1i c\u1ee7a L\u01b0u hu\u1ef3nh l\u00e0: 32 dvC <br\/> V\u1eady nguy\u00ean t\u1eed kh\u1ed1i c\u1ee7a nguy\u00ean t\u1ed1 X l\u00e0 <br\/>$NTK = 24 + 32 = 56$ dvC<br\/>V\u1eady X l\u00e0 s\u1eaft( Fe )<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2014},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"M\u1ed9t h\u1ee3p ch\u1ea5t c\u00f3 ph\u00e2n t\u1eed kh\u1ed1i b\u1eb1ng 40 \u0111vC. Trong ph\u00e2n t\u1eed nguy\u00ean t\u1eed oxi chi\u1ebfm $40\\%$ theo kh\u1ed1i l\u01b0\u1ee3ng , c\u00f2n l\u1ea1i l\u00e0 nguy\u00ean t\u1ed1 Magie. S\u1ed1 nguy\u00ean t\u1eed c\u1ee7a m\u1ed7i nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc c\u00f3 trong ph\u00e2n t\u1eed c\u1ee7a h\u1ee3p ch\u1ea5t ","select":["A. $1Mg, 1O$ ","B. $2Mg, 1O$ ","C. $1Mg, 2O$ ","D. $2Mg, 3O$ "],"hint":"","explain":"<span class='basic_left'>G\u1ecdi c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc t\u1ed5ng qu\u00e1t c\u1ee7a M l\u00e0 ${{Mg}_{x}}{{O}_{y}}$ <br\/>Ta c\u00f3 t\u1ef7 l\u1ec7 % v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng gi\u1eefa hai nguy\u00ean t\u1ed1 trong h\u1ee3p ch\u1ea5t \u0111\u00fang b\u1eb1ng t\u1ef7 l\u1ec7 kh\u1ed1i l\u01b0\u1ee3ng gi\u1eefa hai nguy\u00ean t\u1ed1 trong 1 ph\u00e2n t\u1eed<br\/>$\\Rightarrow \\dfrac{x.NT{{K}_{Mg}}}{y.NT{{K}_{O}}}=\\dfrac{\\%{{m}_{Mg}}}{\\%{{m}_{O}}}\\Rightarrow \\dfrac{x}{y}=\\dfrac{16.60\\%}{24.40\\%}=\\dfrac{1}{1}$ <br\/> v\u1eady c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc c\u1ee7a M l\u00e0 $MgO$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2015},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"Photpho li\u00ean k\u1ebft v\u1edbi Oxi t\u1ea1o th\u00e0nh h\u1ee3p ch\u1ea5t c\u00f3 c\u00f4ng th\u1ee9c ${{P}_{2}}{{O}_{5}}$. H\u00f3a tr\u1ecb c\u1ee7a Photpho trong h\u1ee3p ch\u1ea5t l\u00e0 ","select":["A. $II$ ","B. $III$ ","C. $IV$ ","D. $V$ "],"hint":"","explain":"<span class='basic_left'>G\u1ecdi h\u00f3a tr\u1ecb c\u1ee7a Photpho l\u00e0 a<br\/>Theo quy t\u1eafc h\u00f3a tr\u1ecb: $2\\times a=5\\times II$ <br\/>R\u00fat ra $a = V$<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2016},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"M\u1ed9t h\u1ee3p ch\u1ea5t c\u00f3 t\u1ea1o b\u1edfi \u0110\u1ed3ng h\u00f3a tr\u1ecb $II$ v\u00e0 nh\u00f3m $S{{O}_{4}}$ h\u00f3a tr\u1ecb $II$. C\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc c\u1ee7a h\u1ee3p ch\u1ea5t l\u00e0 ","select":["A. $Cu{{(S{{O}_{4}})}_{2}}$ ","B. $CuS{{O}_{4}}$ ","C. $C{{u}_{2}}S{{O}_{4}}$ ","D. $C{{u}_{2}}{{(S{{O}_{4}})}_{3}}$ "],"hint":"","explain":"<span class='basic_left'>G\u1ecdi c\u00f4ng th\u1ee9c d\u1ea1ng chung l\u00e0 $C{{u}_{x}}{{(S{{O}_{4}})}_{y}}$<br\/>Theo quy t\u1eafc h\u00f3a tr\u1ecb th\u00ec : $x\\times II=y\\times II$<br\/>Chuy\u1ec3n th\u00e0nh t\u1ef7 l\u1ec7 $\\dfrac{x}{y}=\\dfrac{II}{II}=\\dfrac{1}{1}$<br\/>V\u1eady CTHH l\u00e0 $CuS{{O}_{4}}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2017},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"Ph\u00e2n t\u1eed X c\u00f3 ph\u00e2n t\u1eed kh\u1ed1i 81 v\u00e0 \u0111\u01b0\u1ee3c t\u1ea1o n\u00ean t\u1eeb hai nguy\u00ean t\u1ed1 $Zn$ v\u00e0 $O$. CTHH c\u1ee7a ph\u00e2n t\u1eed X l\u00e0 ","select":["A. $Z{{n}_{2}}O$ ","B. $ZnO$ ","C. $Zn{{O}_{2}}$ ","D. $Zn{{O}_{4}}$ "],"hint":"","explain":"<span class='basic_left'>G\u1ecdi CTHH chung c\u1ee7a X l\u00e0 $Z{{n}_{x}}{{O}_{y}}$<br\/>$\\begin{aligned} & \\Rightarrow PTK=x.{{M}_{Zn}}+y.{{M}_{O}} \\\\ & \\Rightarrow 65x+16y=81 \\\\ \\end{aligned}$<br\/>T\u1eeb ph\u01b0\u01a1ng tr\u00ecnh:<br\/>$\\left\\{ \\begin{aligned} & x=1 \\\\ & y=1 \\\\ \\end{aligned} \\right.$ <br\/> V\u1eady CTHH c\u1ee7a X l\u00e0 $ZnO$ <br\/><span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2018},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"M\u1ed9t h\u1ee3p ch\u1ea5t c\u00f3 th\u00e0nh ph\u1ea7n ph\u00e2n t\u1eed g\u1ed3m hai nguy\u00ean t\u1ed1 C v\u00e0 H. T\u1ec9 l\u1ec7 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a C v\u00e0 H l\u00e0 3 : 1. C\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc c\u1ee7a h\u1ee3p ch\u1ea5t l\u00e0 ","select":["A. ${{C}_{2}}{{H}_{4}}$ ","B. ${{C}_{3}}{{H}_{4}}$ ","C. $C{{H}_{4}}$ ","D. ${{C}_{3}}{{H}_{6}}$ "],"hint":"","explain":"<span class='basic_left'>G\u1ecdi c\u00f4ng th\u1ee9c c\u1ee7a chung c\u1ee7a h\u1ee3p ch\u1ea5t l\u00e0 ${{C}_{x}}{{H}_{y}}$<br\/>$\\dfrac{12x}{y}=\\dfrac{3}{1}\\Rightarrow \\dfrac{x}{y}=\\dfrac{3.1}{1.12}=\\dfrac{1}{4}$ <br\/>V\u1eady $x=1$ v\u00e0 $y= 4$<br\/>CTHH c\u1ee7a h\u1ee3p ch\u1ea5t l\u00e0 $C{{H}_{4}}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2019}],"lesson":{"save":0,"level":2}}