{"segment":[{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" D\u1ef1a v\u00e0o ngu\u1ed3n g\u1ed1c polime \u0111\u01b0\u1ee3c chia th\u00e0nh m\u1ea5y lo\u1ea1i:","select":["A. 3 lo\u1ea1i: polime t\u1ed5ng h\u1ee3p, b\u00e1n t\u1ed5ng h\u1ee3p, thi\u00ean nhi\u00ean","B. 3 lo\u1ea1i: polime nh\u1eadn t\u1ea1o, t\u1ed5ng h\u1ee3p, b\u00e1n t\u1ed5ng h\u1ee3p","C. 2 lo\u1ea1i: polime thi\u00ean nhi\u00ean, polime t\u1ed5ng h\u1ee3p.","D. 2 lo\u1ea1i: polime nh\u00e2n t\u1ea1o, thi\u00ean nhi\u00ean."],"hint":"","explain":"<span class='basic_left'>D\u1ef1a v\u00e0o ngu\u1ed3n g\u1ed1c polime \u0111\u01b0\u1ee3c chia th\u00e0nh 2 lo\u1ea1i: polime thi\u00ean nhi\u00ean, polime t\u1ed5ng h\u1ee3p.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2671},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Ch\u1ecdn ph\u00e1t bi\u1ec3u \u0111\u00fang l\u00e0 ","select":["A. polime l\u00e0 ch\u1ea5t d\u1ec5 bay h\u01a1i.","B. polime l\u00e0 nh\u1eefng ch\u1ea5t d\u1ec5 tan trong n\u01b0\u1edbc.","C. polime ch\u1ec9 \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi con ng\u01b0\u1eddi v\u00e0 kh\u00f4ng c\u00f3 trong t\u1ef1 nhi\u00ean.","D. polime l\u00e0 nh\u1eefng ch\u1ea5t r\u1eafn, kh\u00f4ng bay h\u01a1i, th\u01b0\u1eddng kh\u00f4ng tan trong n\u01b0\u1edbc."],"hint":"","explain":"<span class='basic_left'>Polime l\u00e0 nh\u1eefng ch\u1ea5t r\u1eafn, kh\u00f4ng bay h\u01a1i, th\u01b0\u1eddng kh\u00f4ng tan trong n\u01b0\u1edbc. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2672},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Monome n\u00e0o sau \u0111\u00e2y tham gia ph\u1ea3n \u1ee9ng tr\u00f9ng h\u1ee3p \u0111\u1ec3 t\u1ea1o ra PE ","select":["A. Metan. ","B. Etilen","C. Axetilen. ","D. Vinyl clorua."],"hint":"","explain":"<span class='basic_left'>PE (polietilen) : do etilen tr\u00f9ng h\u1ee3p t\u1ea1o th\u00e0nh.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2673},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" D\u00e3y polime n\u00e0o sau \u0111\u00e2y l\u00e0 polime t\u1ed5ng h\u1ee3p","select":["A. Polietilen, xenluloz\u01a1, cao su thi\u00ean nhi\u00ean","B. Polivinyl clorua, tinh b\u1ed9t, t\u01a1 nilon","C. Polivinyl clorua, t\u01a1 nilon, polietilen","D. Cao su buna, cao su thi\u00ean nhi\u00ean, tinh b\u1ed9t."],"hint":"","explain":"<span class='basic_left'>M\u1ed9t s\u1ed1 polime t\u1ed5ng h\u1ee3p: Polivinyl clorua, t\u01a1 nilon, polietilen,.....<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2674},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" D\u00e3y ch\u1ea5t n\u00e0o sau \u0111\u00e2y g\u1ed3m c\u00e1c polime thi\u00ean nhi\u00ean","select":["A. Cao su buna, cao su thi\u00ean nhi\u00ean, tinh b\u1ed9t.","B. Polietilen, xenluloz\u01a1, cao su thi\u00ean nhi\u00ean","C. Protein, cao su thi\u00ean nhi\u00ean, tinh b\u1ed9t.","D. Protein, polietilen, t\u01a1 t\u1eb1m"],"hint":"","explain":"<span class='basic_left'>M\u1ed9t s\u1ed1 polime thi\u00ean nhi\u00ean: Protein, cao su thi\u00ean nhi\u00ean, tinh b\u1ed9t,.....<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2675},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" M\u1eaft x\u00edch t\u1ea1o n\u00ean poli vinyl clorua c\u00f3 c\u00f4ng th\u1ee9c l\u00e0:<br\/><table><tr><th>(1) $-C{{H}_{2}}-C{{H}_{2}}-$ <\/th><th>(2) $-{{C}_{6}}{{H}_{10}}{{O}_{5}}-$ <\/th><th>(3) <br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/hoahoc/bai54/lv2/img\/Capture6C.PNG' \/><\/center> <\/th><th>(4) <br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/hoahoc/bai54/lv2/img\/Capture6D.PNG' \/><\/center> <\/th><\/tr><\/table>","select":["A. 1","B. 2","C. 3 ","D. 4 "],"hint":"","explain":"<span class='basic_left'> <br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/hoahoc/bai54/lv2/img\/Capture6C.PNG' \/><\/center> <br\/> M\u1eaft x\u00edch t\u1ea1o n\u00ean poli vinyl clorua<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2676},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Nh\u1eadn x\u00e9t n\u00e0o sau \u0111\u00e2u \u0111\u00fang:","select":["A. Nh\u1eefng ch\u1ea5t c\u00f3 ph\u00e2n t\u1eed kh\u1ed1i l\u1edbn do nhi\u1ec1u m\u1eaft x\u00edch li\u00ean k\u1ebft v\u1edbi nhau t\u1ea1o th\u00e0nh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 polime","B. Cao su buna thu\u1ed9c lo\u1ea1i polime thi\u00ean nhi\u00ean","C. Protein kh\u00f4ng ph\u1ea3i l\u00e0 polime ","D. Xenluloz\u01a1 l\u00e0 polime t\u1ed5ng h\u1ee3p"],"hint":"","explain":"<span class='basic_left'>Nh\u1eefng ch\u1ea5t c\u00f3 ph\u00e2n t\u1eed kh\u1ed1i l\u1edbn do nhi\u1ec1u m\u1eaft x\u00edch li\u00ean k\u1ebft v\u1edbi nhau t\u1ea1o th\u00e0nh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 polime<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2677},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" T\u00ednh d\u1ebbo c\u1ee7a ch\u1ea5t d\u1ebbo l\u00e0:","select":["A. D\u1ec5 d\u00e0ng c\u00f3 th\u1ec3 d\u00e1t m\u1ecfng \u0111\u01b0\u1ee3c","B. D\u00f9ng b\u00faa \u0111\u1eadp kh\u00f4ng bi\u1ebfn d\u1ea1ng","C. Khi \u00e9p ch\u1ea5t d\u1ebbo v\u00e0o khu\u00f4n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u00edch h\u1ee3p s\u1ebd thu \u0111\u01b0\u1ee3c c\u00e1c h\u00ecnh d\u1ea1ng mong mu\u1ed1n","D. D\u1ec5 d\u00e0ng n\u1ea5u ch\u1ea3y ch\u1ea5t d\u1ebbo."],"hint":"","explain":"<span class='basic_left'>T\u00ednh d\u1ebbo c\u1ee7a ch\u1ea5t d\u1ebbo l\u00e0: Khi \u00e9p ch\u1ea5t d\u1ebbo v\u00e0o khu\u00f4n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u00edch h\u1ee3p s\u1ebd thu \u0111\u01b0\u1ee3c c\u00e1c h\u00ecnh d\u1ea1ng mong mu\u1ed1n. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2678},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Th\u00e0nh ph\u1ea7n ch\u1ee7 y\u1ebfu c\u1ee7a ch\u1ea5t d\u1ebbo l\u00e0:","select":["A. Xenluloz\u01a1","B. Protein ","C. Polime ","D. Cao su thi\u00ean nhi\u00ean"],"hint":"","explain":"<span class='basic_left'>Polime l\u00e0 th\u00e0nh ph\u1ea7n ch\u1ee7 y\u1ebfu c\u1ee7a ch\u1ea5t d\u1ebbo.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2679},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Ch\u1ea5t d\u1ebbo \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong \u0111\u1eddi s\u1ed1ng. \u01afu \u0111i\u1ec3m c\u1ee7a ch\u1ea5t d\u1ebbo l\u00e0:","select":["A. Nh\u1eb9, d\u1ec5 gia c\u00f4ng, d\u1eabn \u0111i\u1ec7n t\u1ed1t","B. Nh\u1eb9, c\u00e1ch \u0111i\u1ec7n, d\u1ec5 v\u1ee1","C. Nh\u1eb9, b\u1ec1n, c\u00e1ch \u0111i\u1ec7n ","D. Nh\u1eb9, d\u1eabn \u0111i\u1ec7n, d\u1eabn nhi\u1ec7t t\u1ed1t."],"hint":"","explain":"<span class='basic_left'>Ch\u1ea5t d\u1ebbo c\u00f3 \u01b0u \u0111i\u1ec3m: nh\u1eb9, b\u1ec1n, c\u00e1ch \u0111i\u1ec7n, c\u00e1ch nhi\u1ec7t, d\u1ec5 gia c\u00f4ng,...<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2680},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" T\u01a1 c\u00f3 c\u1ea5u t\u1ea1o l\u00e0:","select":["A. D\u1ea1ng m\u1ea1ch nh\u00e1nh, d\u1ec5 k\u00e9o s\u1ee3i","B. D\u1ea1ng m\u1ea1ch v\u00f2ng, d\u1ec5 k\u00e9o s\u1ee3i","C. D\u1ea1ng m\u1ea1ch th\u1eb3ng, d\u1ec5 k\u00e9o s\u1ee3i ","D. D\u1ea1ng m\u1ea1ch tr\u00f2n, d\u1ec5 k\u00e9o s\u1ee3i"],"hint":"","explain":"<span class='basic_left'>T\u01a1 c\u00f3 c\u1ea5u t\u1ea1o d\u1ea1ng m\u1ea1ch th\u1eb3ng, d\u1ec5 k\u00e9o s\u1ee3i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2681},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" D\u1ef1a v\u00e0o ngu\u1ed3n g\u1ed1c v\u00e0 qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o, t\u01a1 \u0111\u01b0\u1ee3c chia th\u00e0nh:","select":["A. 2 lo\u1ea1i: T\u01a1 thi\u00ean nhi\u00ean v\u00e0 t\u01a1 nh\u00e2n t\u1ea1o.","B. 2 lo\u1ea1i: t\u01a1 thi\u00ean nhi\u00ean, t\u01a1 h\u00f3a h\u1ecdc.","C. 3 lo\u1ea1i: t\u01a1 thi\u00ean nhi\u00ean, t\u01a1 nh\u00e2n t\u1ea1o, t\u01a1 t\u1ed5ng h\u1ee3p.","D. 3 lo\u1ea1i: t\u01a1 thi\u00ean nhi\u00ean, t\u01a1 h\u00f3a h\u1ecdc, t\u01a1 nh\u00e2n t\u1ea1o."],"hint":"","explain":"<span class='basic_left'>D\u1ef1a v\u00e0o ngu\u1ed3n g\u1ed1c v\u00e0 qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o, t\u01a1 \u0111\u01b0\u1ee3c chia th\u00e0nh 2 lo\u1ea1i: t\u01a1 thi\u00ean nhi\u00ean, t\u01a1 h\u00f3a h\u1ecdc.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2682},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" T\u00ednh \u0111\u00e0n h\u1ed3i c\u1ee7a cao su l\u00e0:","select":["A. Khi \u00e9p cao su v\u00e0o khu\u00f4n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u00edch h\u1ee3p s\u1ebd thu \u0111\u01b0\u1ee3c c\u00e1c h\u00ecnh d\u1ea1ng mong mu\u1ed1n ","B. Khi b\u1ecb bi\u1ebfn d\u1ea1ng d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c v\u00e0 tr\u1edf l\u1ea1i d\u1ea1ng ban \u0111\u1ea7u khi th\u00f4i kh\u00f4ng t\u00e1c d\u1ee5ng l\u1ef1c n\u1eefa","C. Kh\u00f3 \u0111\u1eadp v\u1ee1 v\u00e0 bi\u1ebfn kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng, r\u1ea5t b\u1ec1n ","D. Kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng khi t\u00e1c d\u1ee5ng l\u1ef1c, r\u1ea5t b\u1ec1n."],"hint":"","explain":"<span class='basic_left'>T\u00ednh \u0111\u00e0n h\u1ed3i c\u1ee7a cao su l\u00e0 Khi b\u1ecb bi\u1ebfn d\u1ea1ng d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c v\u00e0 tr\u1edf l\u1ea1i d\u1ea1ng ban \u0111\u1ea7u khi th\u00f4i kh\u00f4ng t\u00e1c d\u1ee5ng l\u1ef1c n\u1eefa<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2683},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Cao su \u0111\u01b0\u1ee3c ph\u00e2n l\u00e0m 2 lo\u1ea1i \u0111\u00f3 l\u00e0:","select":["A. Cao su thi\u00ean nhi\u00ean v\u00e0 cao su h\u00f3a h\u1ecdc","B. Cao su thi\u00ean nhi\u00ean v\u00e0 cao su b\u00e1n t\u1ed5ng h\u1ee3p","C. Cao su thi\u00ean nhi\u00ean v\u00e0 cao su t\u1ed5ng h\u1ee3p ","D. Cao su thi\u00ean nhi\u00ean v\u00e0 cao su nh\u00e2n t\u1ea1o"],"hint":"","explain":"<span class='basic_left'>Cao su \u0111\u01b0\u1ee3c ph\u00e2n l\u00e0m 2 lo\u1ea1i \u0111\u00f3 l\u00e0: Cao su thi\u00ean nhi\u00ean v\u00e0 cao su t\u1ed5ng h\u1ee3p<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2684},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Cao su c\u00f3 c\u00e1c t\u00ednh n\u0103ng l\u00e0:","select":["A. Kh\u00f4ng tan trong n\u01b0\u1edbc, d\u1eabn \u0111i\u1ec7n, d\u1eabn nhi\u1ec7t t\u1ed1t,...","B. Kh\u00f4ng th\u1ea5m n\u01b0\u1edbc, ch\u1ecbu m\u00e0i m\u00f2n, c\u00e1ch \u0111i\u1ec7n,...","C. Th\u1ea5m n\u01b0\u1edbc, c\u00e1ch \u0111i\u1ec7n, th\u1ea5m kh\u00ed t\u1ed1t,... ","D. Th\u1ea5m n\u01b0\u1edbc, kh\u00f4ng th\u1ea5m kh\u00ed, c\u00e1ch \u0111i\u1ec7n t\u1ed1t,..."],"hint":"","explain":"<span class='basic_left'>Cao su c\u00f3 c\u00e1c t\u00ednh n\u0103ng: kh\u00f4ng th\u1ea5m n\u01b0\u1edbc, kh\u00f4ng th\u1ea5m kh\u00ed, ch\u1ecbu m\u00e0i m\u00f2n, c\u00e1ch \u0111i\u1ec7n t\u1ed1t,....<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2685},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" S\u1ed1 m\u1eaft x\u00edch c\u1ee7a ph\u00e2n t\u1eed tinh b\u1ed9t l\u00e0. Bi\u1ebft kh\u1ed1i l\u01b0\u1ee3ng ph\u00e2n t\u1eed c\u1ee7a tinh b\u1ed9t l\u00e0 194400.","select":["A. 1000 ","B. 1100 ","C. 1200 ","D. 1400 "],"hint":"","explain":"<span class='basic_left'>Tinh b\u1ed9t c\u00f3 c\u00f4ng th\u1ee9c l\u00e0: ${{({{C}_{6}}{{H}_{10}}{{O}_{5}})}_{n}}$ <br\/> S\u1ed1 m\u1eaft x\u00edch c\u1ee7a tinh b\u1ed9t l\u00e0: $n=\\dfrac{19440}{162}=1200$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2686},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Kh\u1ed1i l\u01b0\u1ee3ng ph\u00e2n t\u1eed c\u1ee7a 1 m\u1eaft x\u00edch cao su thi\u00ean nhi\u00ean l\u00e0 bao nhi\u00eau, bi\u1ebft kh\u1ed1i l\u01b0\u1ee3ng ph\u00e2n t\u1eed c\u1ee7a 1 \u0111o\u1ea1n m\u1eaft x\u00edch l\u00e0 95200 v\u00e0 s\u1ed1 l\u01b0\u1ee3ng m\u1eaft x\u00edch l\u00e0 1400:","select":["A. 72 \u0111vC","B. 70 \u0111vC","C. 68 \u0111vC ","D. 66 \u0111vC"],"hint":"","explain":"<span class='basic_left'>Kh\u1ed1i l\u01b0\u1ee3ng ph\u00e2n t\u1eed c\u1ee7a 1 m\u1eaft x\u00edch cao su thi\u00ean nhi\u00ean l\u00e0: $\\dfrac{95200}{1400}=68$ \u0111vC<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2687},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Tr\u00f9ng h\u1ee3p 0,5 t\u1ea5n etilen v\u1edbi hi\u1ec7u su\u1ea5t 90 % th\u00ec kh\u1ed1i l\u01b0\u1ee3ng polietilen thu \u0111\u01b0\u1ee3c l\u00e0","select":["A. 0,5 t\u1ea5n. ","B. 5 t\u1ea5n. ","C. 4,5 t\u1ea5n. ","D. 0,45 t\u1ea5n "],"hint":"","explain":"<span class='basic_left'>Kh\u1ed1i l\u01b0\u1ee3ng polietilen thu \u0111\u01b0\u1ee3c l\u00e0: $m=\\dfrac{0,5.90\\%}{100\\%}=0,45\\text{t\u1ea5n}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2688},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" \u0110\u1ec3 thu \u0111\u01b0\u1ee3c 1 t\u1ea5n PVC th\u00ec kh\u1ed1i l\u01b0\u1ee3ng vinyl clorua c\u1ea7n d\u00f9ng l\u00e0 (Hi\u1ec7u su\u1ea5t ph\u1ea3n \u1ee9ng l\u00e0 90%) ","select":["A. 1 t\u1ea5n. ","B. 0,9 t\u1ea5n. ","C. 0,1 t\u1ea5n. ","D. 1,11 t\u1ea5n. "],"hint":"","explain":"<span class='basic_left'>Kh\u1ed1i l\u01b0\u1ee3ng vinyl clorua c\u1ea7n d\u00f9ng l\u00e0: $m=\\dfrac{1.100\\%}{90\\%}\\approx 1,11\\,\\text{t\u1ea5n}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2689},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Bi\u1ebft cao su thi\u00ean nhi\u00ean \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb m\u1ee7 cao su, c\u1ea5u t\u1ea1o t\u1eeb monome c\u00f3 c\u00f4ng th\u1ee9c $C_5H_8$. T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng m\u1ee7 cao su c\u1ea7n l\u1ea5y \u0111\u1ec3 \u0111i\u1ec1u ch\u1ebf \u0111\u01b0\u1ee3c 1 t\u1ea5n cao su. Bi\u1ebft trong m\u1ee7 cao su ch\u1ee9a 75% $C_5H_8$, hi\u1ec7u su\u1ea5t qu\u00e1 tr\u00ecnh t\u1ea1o cao su thi\u00ean nhi\u00ean \u0111\u1ea1t 70%.","select":["A. 1,8 t\u1ea5n","B. 1,9 t\u1ea5n","C. 2,1 t\u1ea5n","D. 2,3 t\u1ea5n"],"hint":"","explain":"<span class='basic_left'>${{m}_{{{C}_{5}}{{H}_{8}}\\,}}=1\\,\\text{t\u1ea5n}$ <br\/> Hi\u1ec7u su\u1ea5t qu\u00e1 tr\u00ecnh t\u1ea1o cao su thi\u00ean nhi\u00ean \u0111\u1ea1t 70%.$\\Rightarrow {{m}_{{{C}_{5}}{{H}_{8}}\\,\\text{c\u1ea7n}}}=\\dfrac{1.100\\%}{70\\%}\\approx 1,43\\,\\text{t\u1ea5n}$ <br\/> Trong m\u1ee7 cao su ch\u1ee9a 75% $C_5H_8$ $\\Rightarrow {{m}_{\\text{m\u1ee7 cao su}}}=\\dfrac{1,43.100\\%}{75\\%}\\approx 1,9\\,\\text{t\u1ea5n}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2690}],"lesson":{"save":0,"level":2}}