{"segment":[{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" C\u00e1c c\u00e2u sau, c\u00e2u n\u00e0o \u0111\u00fang khi \u0111\u1ecbnh ngh\u0129a dung d\u1ecbch?","select":["A. Dung d\u1ecbch l\u00e0 h\u1ed7n h\u1ee3p \u0111\u1ed3ng nh\u1ea5t c\u1ee7a ch\u1ea5t r\u1eafn v\u00e0 ch\u1ea5t l\u1ecfng ","B. Dung d\u1ecbch l\u00e0 h\u1ed7n h\u1ee3p \u0111\u1ed3ng nh\u1ea5t c\u1ee7a ch\u1ea5t kh\u00ed v\u00e0 ch\u1ea5t l\u1ecfng","C. Dung d\u1ecbch l\u00e0 h\u1ed7n h\u1ee3p \u0111\u1ed3ng nh\u1ea5t c\u1ee7a hai ch\u1ea5t l\u1ecfng","D. Dung d\u1ecbch l\u00e0 h\u1ed7n h\u1ee3p \u0111\u1ed3ng nh\u1ea5t c\u1ee7a ch\u1ea5t tan v\u00e0 dung m\u00f4i"],"hint":"","explain":"<span class='basic_left'>Dung d\u1ecbch l\u00e0 h\u1ed7n h\u1ee3p \u0111\u1ed3ng nh\u1ea5t c\u1ee7a ch\u1ea5t tan v\u00e0 dung m\u00f4i<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2380},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Khi ho\u00e0 tan 1 ml r\u01b0\u1ee3u \u00eatylic v\u00e0o 10ml n\u01b0\u1edbc th\u00ec:","select":["A. R\u01b0\u1ee3u l\u00e0 ch\u1ea5t tan v\u00e0 n\u01b0\u1edbc l\u00e0 dung m\u00f4i ","B. N\u01b0\u1edbc l\u00e0 ch\u1ea5t tan v\u00e0 r\u01b0\u1ee3u l\u00e0 dung m\u00f4i","C. N\u01b0\u1edbc v\u00e0 r\u01b0\u1ee3u \u0111\u1ec1u l\u00e0 ch\u1ea5t tan","D. N\u01b0\u1edbc v\u00e0 r\u01b0\u1ee3u \u0111\u1ec1u l\u00e0 dung m\u00f4i "],"hint":"","explain":"<span class='basic_left'>R\u01b0\u1ee3u l\u00e0 ch\u1ea5t tan v\u00e0 n\u01b0\u1edbc l\u00e0 dung m\u00f4i<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2381},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" L\u00e0m sao \u0111\u1ec3 qu\u00e1 tr\u00ecnh h\u00f2a tan ch\u1ea5t r\u1eafn di\u1ec5n ra nhanh h\u01a1n","select":["A. Khu\u1ea5y dung d\u1ecbch","B. Nghi\u1ec1n nh\u1ecf ch\u1ea5t r\u1eafn ","C. \u0110un n\u00f3ng dung d\u1ecbch ","D. C\u1ea3 3 c\u00e1ch tr\u00ean \u0111\u1ec1u \u0111\u01b0\u1ee3c"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ec3 qu\u00e1 tr\u00ecnh h\u00f2a tan ch\u1ea5t r\u1eafn di\u1ec5n ra nhanh h\u01a1n ta d\u00f9ng 1, 2 ho\u1eb7c c\u1ea3 3 c\u00e1ch sau: <br\/>Khu\u1ea5y dung d\u1ecbch<br\/>Nghi\u1ec1n nh\u1ecf ch\u1ea5t r\u1eafn<br\/>\u0110un n\u00f3ng dung d\u1ecbch <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2382},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" H\u00f2a tan 3 gam mu\u1ed1i $NaCl$ v\u00e0o trong n\u01b0\u1edbc thu \u0111\u01b0\u1ee3c dung d\u1ecbch mu\u1ed1i \u0103n 5%. Ch\u1ea5t tan l\u00e0:","select":["A. Mu\u1ed1i $NaCl$","B. Mu\u1ed1i $NaCl$ v\u00e0 n\u01b0\u1edbc ","C. N\u01b0\u1edbc","D. Dung d\u1ecbch n\u01b0\u1edbc mu\u1ed1i thu \u0111\u01b0\u1ee3c"],"hint":"","explain":"<span class='basic_left'>Mu\u1ed1i $NaCl$ l\u00e0 ch\u1ea5t tan, dung m\u00f4i l\u00e0 n\u01b0\u1edbc.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2383},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" D\u1ea7u \u0103n c\u00f3 th\u1ec3 tan trong:","select":["A. N\u01b0\u1edbc","B. N\u01b0\u1edbc mu\u1ed1i","C. X\u0103ng ","D. N\u01b0\u1edbc \u0111\u01b0\u1eddng "],"hint":"","explain":"<span class='basic_left'>D\u1ea7u \u0103n c\u00f3 th\u1ec3 tan trng x\u0103ng<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2384},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a l\u00e0","select":["A. Dung d\u1ecbch c\u00f3 th\u1ec3 h\u00f2a tan th\u00eam ch\u1ea5t tan","B. T\u1ec9 l\u1ec7 2:1 gi\u1eefa ch\u1ea5t tan v\u00e0 dung m\u00f4i","C. T\u1ec9 l\u1ec7 1:1 gi\u1eefa ch\u1ea5t tan v\u00e0 dung m\u00f4i","D. L\u00e0m qu\u1ef3 t\u00edm h\u00f3a \u0111\u1ecf"],"hint":"","explain":"<span class='basic_left'>Dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a l\u00e0 dung d\u1ecbch c\u00f3 th\u1ec3 h\u00f2a tan th\u00eam ch\u1ea5t tan<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2385},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Hai ch\u1ea5t kh\u00f4ng th\u1ec3 h\u00f2a tan v\u1edbi nhau t\u1ea1o th\u00e0nh dung d\u1ecbch l\u00e0","select":["A. N\u01b0\u1edbc v\u00e0 \u0111\u01b0\u1eddng ","B. D\u1ea7u \u0103n v\u00e0 x\u0103ng","C. D\u1ea7u \u0103n v\u00e0 c\u00e1t","D. R\u01b0\u1ee3u v\u00e0 n\u01b0\u1edbc"],"hint":"","explain":"<span class='basic_left'>D\u1ea7u \u0103n v\u00e0 c\u00e1t kh\u00f4ng th\u1ec3 tan v\u00e0o nhau t\u1ea1o th\u00e0nh dung d\u1ecbch \u0111\u1ed3ng nh\u1ea5t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2386},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Ch\u1ea5t tan t\u1ed3n t\u1ea1i \u1edf d\u1ea1ng","select":["A. Ch\u1ea5t r\u1eafn ","B. Ch\u1ea5t l\u1ecfng ","C. Ch\u1ea5t h\u01a1i (kh\u00ed) ","D. Ch\u1ea5t r\u1eafn, l\u1ecfng, h\u01a1i (kh\u00ed)"],"hint":"","explain":"<span class='basic_left'>Ch\u1ea5t tan c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i \u1edf c\u00e1c d\u1ea1ng nh\u01b0 r\u1eafn, l\u1ecfng, kh\u00ed. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2387},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n SAI","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"","select":["A. Dung d\u1ecbch l\u00e0 h\u1ee3p ch\u1ea5t \u0111\u1ed3ng nh\u1ea5t c\u1ee7a dung m\u00f4i v\u00e0 ch\u1ea5t tan ","B. X\u0103ng l\u00e0 dung m\u00f4i c\u1ee7a d\u1ea7u \u0103n","C. N\u01b0\u1edbc l\u00e0 dung m\u00f4i c\u1ee7a d\u1ea7u \u0103n ","D. Ch\u1ea5t tan l\u00e0 ch\u1ea5t b\u1ecb tan trong dung m\u00f4i"],"hint":"","explain":"<span class='basic_left'>N\u01b0\u1edbc kh\u00f4ng h\u00f2a tan \u0111\u01b0\u1ee3c d\u1ea7u \u0103n n\u00ean n\u01b0\u1edbc kh\u00f4ng l\u00e0 dung m\u00f4i c\u1ee7a d\u1ea7u \u0103n<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2388},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Khi h\u00f2a tan d\u1ea7u \u0103n trong c\u1ed1c x\u0103ng th\u00ec x\u0103ng \u0111\u00f3ng vai tr\u00f2 g\u00ec","select":["A. Ch\u1ea5t tan ","B. Dung m\u00f4i","C. Ch\u1ea5t b\u00e3o h\u00f2a ","D. Ch\u1ea5t ch\u01b0a b\u00e3o h\u00f2a"],"hint":"","explain":"<span class='basic_left'>Ch\u1ea5t tan: d\u1ea7u \u0103n; dung m\u00f4i: x\u0103ng. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2389},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Dung d\u1ecbch kh\u00f4ng th\u1ec3 h\u00f2a tan th\u00eam ch\u1ea5t tan l\u00e0","select":["A. Dung m\u00f4i","B. Dung d\u1ecbch b\u00e3o h\u00f2a","C. Dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a ","D. C\u1ea3 A v\u00e0 B"],"hint":"","explain":"<span class='basic_left'>Dung d\u1ecbch b\u00e3o h\u00f2a l\u00e0 dung d\u1ecbch kh\u00f4ng th\u1ec3 h\u00f2a tan th\u00eam ch\u1ea5t tan<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2390},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" L\u1ea5y 1 th\u00eca d\u1ea7u \u0103n cho v\u00e0o 1 c\u1ed1c n\u01b0\u1edbc khu\u1ea5y nh\u1eb9. Hi\u1ec7n t\u01b0\u1ee3ng quan s\u00e1t \u0111\u01b0\u1ee3c l\u00e0:","select":["A. D\u1ea7u \u0103n tan trong n\u01b0\u1edbc t\u1ea1o th\u00e0nh dung d\u1ecbch \u0111\u1ed3ng nh\u1ea5t","B. D\u1ea7u \u0103n kh\u00f4ng tan trong n\u01b0\u1edbc, d\u1ea7u \u0103n n\u1ed5i l\u00ean tr\u00ean b\u1ec1 m\u1eb7t n\u01b0\u1edbc","C. D\u1ea7u \u0103n kh\u00f4ng tan trong n\u01b0\u1edbc, ch\u00ecm xu\u1ed1ng d\u01b0\u1edbi \u0111\u00e1y c\u1ed1c ","D. L\u00fac \u0111\u1ea7u d\u1ea7u \u0103n tan trong n\u01b0\u1edbc sau \u0111\u00f3 d\u1ea7u \u0103n n\u1ed5i l\u00ean tr\u00ean"],"hint":"","explain":"<span class='basic_left'>D\u1ea7u \u0103n kh\u00f4ng tan trong n\u01b0\u1edbc, nh\u1eb9 h\u01a1n n\u01b0\u1edbc n\u00ean n\u1ed5i l\u00ean tr\u00ean b\u1ec1 m\u1eb7t n\u01b0\u1edbc <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2391},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" C\u00f3 1 dung d\u1ecbch b\u00e3o h\u00f2a \u0111\u01b0\u1eddng, th\u00eam v\u00e0o c\u1ed1c \u0111\u00f3 1 l\u00edt n\u01b0\u1edbc ta thu \u0111\u01b0\u1ee3c dung d\u1ecbch:","select":["A. B\u00e3o h\u00f2a \u0111\u01b0\u1eddng ","B. Qu\u00e1 b\u00e3o h\u00f2a \u0111\u01b0\u1eddng ","C. Ch\u01b0a b\u00e3o h\u00f2a \u0111\u01b0\u1eddng","D. Kh\u00f4ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c"],"hint":"","explain":"<span class='basic_left'>Khi th\u00eam 1 l\u00edt n\u01b0\u1edbc v\u00e0o c\u1ed1c n\u01b0\u1edbc \u0111\u01b0\u1eddng b\u00e3o h\u00f2a ta s\u1ebd thu \u0111\u01b0\u1ee3c c\u1ed1c n\u01b0\u1edbc \u0111\u01b0\u1eddng ch\u01b0a b\u00e3o h\u00f2a (v\u00ec c\u00f3 c\u1ed1c thu \u0111\u01b0\u1ee3c c\u00f3 th\u1ec3 h\u00f2a tan th\u00eam \u0111\u01b0\u1eddng)<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2392},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" V\u00ec sao \u0111un n\u00f3ng dung d\u1ecbch c\u0169ng l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 ch\u1ea5t r\u1eafn tan nhanh h\u01a1n trong n\u01b0\u1edbc","select":["A. L\u00e0m m\u1ec1m ch\u1ea5t r\u1eafn ","B. C\u00f3 \u00e1p su\u1ea5t cao","C. \u1ede nhi\u1ec7t \u0111\u1ed9 cao, c\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n l\u00e0m t\u0103ng s\u1ed1 l\u1ea7n va ch\u1ea1m gi\u1eefa c\u00e1c ph\u00e2n t\u1eed v\u00e0 b\u1ec1 m\u1eb7t ch\u1ea5t r\u1eafn khi\u1ebfn ch\u00fang d\u1ec5 d\u00e0ng b\u1ecb h\u00f2a tan. ","D. Do nhi\u1ec7t \u0111\u1ed9 cao"],"hint":"","explain":"<span class='basic_left'>\u1ede nhi\u1ec7t \u0111\u1ed9 cao, c\u00e1c ph\u00e2n t\u1eed n\u01b0\u1edbc chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n l\u00e0m t\u0103ng s\u1ed1 l\u1ea7n va ch\u1ea1m gi\u1eefa c\u00e1c ph\u00e2n t\u1eed v\u00e0 b\u1ec1 m\u1eb7t ch\u1ea5t r\u1eafn khi\u1ebfn ch\u00fang d\u1ec5 d\u00e0ng b\u1ecb h\u00f2a tan. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2393},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" \u1ede nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng 10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 20 gam \u0111\u01b0\u1eddng. 1 c\u1ed1c n\u01b0\u1edbc ch\u1ee9a 10 gam n\u01b0\u1edbc h\u00f2a tan 15 gam \u0111\u01b0\u1eddng thu \u0111\u01b0\u1ee3c dung d\u1ecbch \u0111\u01b0\u1eddng:","select":["A. B\u00e3o h\u00f2a \u0111\u01b0\u1eddng ","B. Qu\u00e1 b\u00e3o h\u00f2a \u0111\u01b0\u1eddng ","C. Ch\u01b0a b\u00e3o h\u00f2a \u0111\u01b0\u1eddng ","D. Kh\u00f4ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c"],"hint":"","explain":"<span class='basic_left'>L\u01b0\u1ee3ng \u0111\u01b0\u1eddng trong 10 gam n\u01b0\u1edbc l\u00e0 15 gam ch\u01b0a \u0111\u1ea1t t\u1ed1i \u0111a 20 gam n\u00ean dung d\u1ecbch thu \u0111\u01b0\u1ee3c v\u1eabn c\u00f3 th\u1ec3 h\u00f2a tan th\u00eam \u0111\u01b0\u1eddng n\u00ean \u0111\u00f3 l\u00e0 dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a \u0111\u01b0\u1eddng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2394},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" \u1ede nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng 10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 3,6 gam mu\u1ed1i \u0103n. 1 c\u1ed1c n\u01b0\u1edbc ch\u1ee9a 10 gam n\u01b0\u1edbc h\u00f2a tan 3,6 gam mu\u1ed1i \u0103n thu \u0111\u01b0\u1ee3c dung d\u1ecbch mu\u1ed1i \u0103n:","select":["A. B\u00e3o h\u00f2a mu\u1ed1i \u0103n","B. Qu\u00e1 b\u00e3o h\u00f2a mu\u1ed1i \u0103n","C. Ch\u01b0a b\u00e3o h\u00f2a mu\u1ed1i \u0103n","D. Kh\u00f4ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c"],"hint":"","explain":"<span class='basic_left'>C\u1ed1c n\u01b0\u1edbc ch\u1ee9a 10 gam n\u01b0\u1edbc \u0111\u00e3 h\u00f2a tan l\u01b0\u1ee3ng mu\u1ed1i \u0103n t\u1ed1i \u0111a 3,6 gam n\u00ean kh\u00f4ng th\u1ec3 h\u00f2a tan th\u00eam mu\u1ed1i \u0103n, dung d\u1ecbch thu \u0111\u01b0\u1ee3c l\u00e0 dung d\u1ecbch b\u00e3o h\u00f2a mu\u1ed1i \u0103n<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2395},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" \u1ede nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng 10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 20 gam \u0111\u01b0\u1eddng. 1 c\u1ed1c n\u01b0\u1edbc ch\u1ee9a 15 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a bao nhi\u00eau gam \u0111\u01b0\u1eddng \u0111\u1ec3 thu \u0111\u01b0\u1ee3c dung d\u1ecbch \u0111\u01b0\u1eddng b\u00e3o h\u00f2a","select":["A. 20 gam","B. 30 gam","C. 40 gam","D. 50 gam"],"hint":"","explain":"<span class='basic_left'>10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 20 gam \u0111\u01b0\u1eddng <br\/>15 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a x gam \u0111\u01b0\u1eddng <br\/> $x=\\dfrac{15.20}{10}=30\\,gam$<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2396},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" \u1ede nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng 10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 3,6 gam mu\u1ed1i \u0103n. 1 c\u1ed1c n\u01b0\u1edbc ch\u1ee9a 12 gam n\u01b0\u1edbc, mu\u1ed1n thu \u0111\u01b0\u1ee3c dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a mu\u1ed1i \u0103n ta ph\u1ea3i h\u00f2a tan bao nhi\u00eau gam mu\u1ed1i \u0103n","select":["A. 3,6 gam ","B. 4,5 gam ","C. 5,4 gam ","D. 6,1 gam"],"hint":"","explain":"<span class='basic_left'>10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 3,6 gam mu\u1ed1i \u0103n <br\/> 12 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a x gam mu\u1ed1i \u0103n <br\/> $x=\\dfrac{12.3,6}{10}=4,32\\,gam$ <br\/> Mu\u1ed1n thu \u0111\u01b0\u1ee3c dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a th\u00ec l\u01b0\u1ee3ng mu\u1ed1i \u0103n h\u00f2a tan ph\u1ea3i < 4,32 gam. Ch\u1ec9 c\u00f3 \u0111\u00e1p \u00e1n A th\u1ecfa m\u00e3n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2397},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" \u1ede nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng 10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 20 gam \u0111\u01b0\u1eddng. V\u1eady v\u1edbi 35 gam \u0111\u01b0\u1eddng th\u00ec c\u1ea7n th\u1ec3 t\u00edch n\u01b0\u1edbc l\u00e0 bao nhi\u00eau \u0111\u1ec3 thu \u0111\u01b0\u1ee3c dung d\u1ecbch \u0111\u01b0\u1eddng b\u00e3o h\u00f2a. (bi\u1ebft ${{d}_{{{H}_{2}}O}}=1g\/ml$)","select":["A. 10,7 ml ","B. 15,7 ml","C. 17,5 ml ","D. 20,1 ml"],"hint":"","explain":"<span class='basic_left'>10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 20 gam \u0111\u01b0\u1eddng <br\/> x gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 35 gam \u0111\u01b0\u1eddng <br\/> $x=\\dfrac{10.35}{20}=17,5gam\\Rightarrow {{V}_{{{H}_{2}}O}}=\\dfrac{m}{d}=\\dfrac{17,5}{1}=17,5\\,ml$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2398},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" \u1ede nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng 10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 3,6 gam mu\u1ed1i \u0103n (NaCl). 1 c\u1ed1c n\u01b0\u1edbc ch\u1ee9a 20 gam n\u01b0\u1edbc c\u00f3 h\u00f2a tan 7 gam mu\u1ed1i \u0103n. Nh\u1eadn x\u00e9t n\u00e0o sau \u0111\u00e2y \u0111\u00fang:","select":["A. Dung d\u1ecbch thu \u0111\u01b0\u1ee3c c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 20 gam, dung d\u1ecbch b\u00e3o h\u00f2a mu\u1ed1i \u0103n ","B. Dung d\u1ecbch thu \u0111\u01b0\u1ee3c c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 20 gam, dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a mu\u1ed1i \u0103n","C. Dung d\u1ecbch thu \u0111\u01b0\u1ee3c c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 27 gam, dung d\u1ecbch b\u00e3o h\u00f2a mu\u1ed1i \u0103n ","D. Dung d\u1ecbch thu \u0111\u01b0\u1ee3c c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 27 gam, dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a mu\u1ed1i \u0103n"],"hint":"","explain":"<span class='basic_left'>10 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a 3,6 gam mu\u1ed1i \u0103n <br\/> 20 gam n\u01b0\u1edbc c\u00f3 th\u1ec3 h\u00f2a tan t\u1ed1i \u0111a x gam mu\u1ed1i \u0103n <br\/> $x=\\dfrac{20.3,6}{10}=7,2\\,gam<7\\,gam\\Rightarrow $C\u00f3 th\u1ec3 h\u00f2a tan th\u00eam mu\u1ed1i \u0103n v\u00e0o c\u1ed1c n\u01b0\u1edbc n\u00ean dung d\u1ecbch ch\u01b0a b\u00e3o h\u00f2a mu\u1ed1i \u0103n. ${{m}_{\\text{dd}}}={{m}_{{{H}_{2}}O}}+{{m}_{NaCl}}=20+7=27\\,gam$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2399}],"lesson":{"save":0,"level":2}}