{"segment":[{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Trong c\u00e1c kim lo\u1ea1i sau \u0111\u00e2y, kim lo\u1ea1i d\u1eabn \u0111i\u1ec7n t\u1ed1t nh\u1ea5t l\u00e0:","select":["A. Nh\u00f4m (Al) ","B. B\u1ea1c(Ag)","C. \u0110\u1ed3ng (Cu)","D. S\u1eaft (Fe)"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n c\u1ee7a kim lo\u1ea1i \u0111\u01b0\u1ee3c x\u1ebfp theo th\u1ee9 t\u1ef1: Ag > Cu > Au > Al > Fe <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":1991},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Trong c\u00e1c kim lo\u1ea1i sau \u0111\u00e2y, kim lo\u1ea1i c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y cao nh\u1ea5t l\u00e0:","select":["A. Vonfam (W) ","B. \u0110\u1ed3ng (Cu)","C. S\u1eaft (Fe)","D. K\u1ebdm (Zn)"],"hint":"","explain":"<span class='basic_left'>Vonfam (W) c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y cao nh\u1ea5t, \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng l\u00e0 d\u00e2y t\u00f3c b\u00f3ng \u0111\u00e8n<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":1992},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Trong c\u00e1c kim lo\u1ea1i sau \u0111\u00e2y, kim lo\u1ea1i d\u1ebbo nh\u1ea5t l\u00e0:","select":["A. \u0110\u1ed3ng (Cu) ","B. Nh\u00f4m (Al)","C. B\u1ea1c (Ag) ","D. V\u00e0ng (Au)"],"hint":"","explain":"<span class='basic_left'>Au l\u00e0 kim lo\u1ea1i d\u1ebbo nh\u1ea5t. Ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 d\u00e1t \u0111\u01b0\u1ee3c nh\u1eefng l\u00e1 v\u00e0ng m\u1ecfng t\u1edbi 1\/20 micr\u00f4 (1 micr\u00f4 =1\/1000 mm) v\u00e0 \u00e1nh s\u00e1ng c\u00f3 th\u1ec3 \u0111i qua \u0111\u01b0\u1ee3c<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":1993},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Kim lo\u1ea1i n\u00e0o sau \u0111\u00e2y nh\u1eb9 nh\u1ea5t (c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang nh\u1ecf nh\u1ea5t) ","select":["A. Liti (Li) ","B. Na (Natri)","C. Kali (K) ","D. Rubi\u0111i (Rb)"],"hint":"","explain":"<span class='basic_left'>Li l\u00e0 kim lo\u1ea1i nh\u1eb9 nh\u1ea5t <br\/>Os l\u00e0 kim lo\u1ea1i n\u1eb7ng nh\u1ea5t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":1994},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Kim lo\u1ea1i \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m v\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o v\u1ecf m\u00e1y bay do c\u00f3 t\u00ednh b\u1ec1n v\u00e0 nh\u1eb9, \u0111\u00f3 l\u00e0 kim lo\u1ea1i","select":["A. Na ","B. Zn","C. Al ","D. K"],"hint":"","explain":"<span class='basic_left'>Al nh\u1eb9 v\u00e0 c\u00f3 t\u00ednh b\u1ec1n, kh\u00f4ng g\u1ec9, \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng ch\u1ebf t\u1ea1o v\u1ecf m\u00e1y bay<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":1995},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Kim lo\u1ea1i \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m \u0111\u1ed3 trang s\u1ee9c v\u00ec c\u00f3 \u00e1nh kim r\u1ea5t \u0111\u1eb9p, \u0111\u00f3 l\u00e0 c\u00e1c kim lo\u1ea1i:","select":["A. Ag, Cu ","B. Au, Pt","C. Au, Al ","D. Ag, Al"],"hint":"","explain":"<span class='basic_left'>Au, Pt, Ag \u0111\u1ec1u l\u00e0 c\u00e1c kim lo\u1ea1i c\u00f3 t\u00ednh \u00e1nh kim \u0111\u1eb9p, \u0111\u01b0\u01a1c s\u1eed d\u1ee5ng l\u00e0m \u0111\u1ed3 trang s\u1ee9c<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":1996},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Kim lo\u1ea1i n\u00e0o sau \u0111\u00e2y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t trong d\u00e2y d\u1eabn \u0111i\u1ec7n","select":["A. \u0110\u1ed3ng (Cu)","B. Nh\u00f4m (Al)","C. B\u1ea1c (Ag) ","D. V\u00e0ng (Au)"],"hint":"","explain":"<span class='basic_left'>Cu c\u00f3 t\u00ednh d\u1eabn \u0111i\u1ec7n k\u00e9m h\u01a1n Ag nh\u01b0ng c\u00f3 gi\u00e1 th\u00e0nh r\u1ebb n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i l\u00e0m d\u00e2y d\u1eabn \u0111i\u1ec7n<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":1997},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Kim lo\u1ea1i n\u00e0o sau \u0111\u00e2y n\u1eb7ng nh\u1ea5t (c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang nh\u1ecf nh\u1ea5t) ","select":["A. Osmi (Os) ","B. Na (Natri)","C. Kali (K)","D. Rubi\u0111i (Rb)"],"hint":"","explain":"<span class='basic_left'>Li l\u00e0 kim lo\u1ea1i nh\u1eb9 nh\u1ea5t <br\/>Os l\u00e0 kim lo\u1ea1i n\u1eb7ng nh\u1ea5t<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":1998},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Trong c\u00e1c kim lo\u1ea1i sau \u0111\u00e2y, kim lo\u1ea1i d\u1eabn nhi\u1ec7t k\u00e9m nh\u1ea5t l\u00e0","select":["A. Nh\u00f4m (Al) ","B. B\u1ea1c(Ag)","C. \u0110\u1ed3ng (Cu) ","D. S\u1eaft (Fe)"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n c\u1ee7a kim lo\u1ea1i \u0111\u01b0\u1ee3c x\u1ebfp theo th\u1ee9 t\u1ef1: Ag > Cu > Au > Al > Fe <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":1999},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Kim lo\u1ea1i d\u1eabn \u0111i\u1ec7n t\u1ed1t h\u01a1n Al l\u00e0","select":["A. Zn ","B. Cu ","C. Fe ","D. Mg"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n c\u1ee7a kim lo\u1ea1i \u0111\u01b0\u1ee3c x\u1ebfp theo th\u1ee9 t\u1ef1: Ag > Cu > Au > Al > Fe <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2000},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Khi quan s\u00e1t c\u00e1c \u0111\u1ed3 trang s\u1ee9c b\u1eb1ng b\u1ea1c, v\u00e0ng ta th\u1ea5y c\u00f3 v\u1ebb s\u00e1ng l\u1ea5p l\u00e1nh l\u00e0 do t\u00ednh ch\u1ea5t v\u1eadt l\u00fd n\u00e0o c\u1ee7a kim lo\u1ea1i","select":["A. D\u1eabn \u0111i\u1ec7n","B. D\u1eabn nhi\u1ec7t","C. D\u1ebbo ","D. \u00c1nh kim"],"hint":"","explain":"<span class='basic_left'>V\u1ebb s\u00e1ng l\u1ea5p l\u00e1nh c\u1ee7a kim lo\u1ea1i l\u00e0 do t\u00ednh \u00e1nh kim c\u1ee7a kim lo\u1ea1i<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2001},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" Kim lo\u1ea1i Au c\u00f3 \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n \u0111\u1ee9ng th\u1ee9","select":["A. 1 ","B. 2","C. 3 ","D. 4"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n c\u1ee7a kim lo\u1ea1i \u0111\u01b0\u1ee3c x\u1ebfp theo th\u1ee9 t\u1ef1: Ag > Cu > Au > Al > Fe <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2002},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" 1 mol \u0111\u1ed3ng (nhi\u1ec7t \u0111\u1ed9 \u00e1p su\u1ea5t trong ph\u00f2ng th\u00ed nghi\u1ec7m), th\u1ec3 t\u00edch 7,16 $cm^3$, c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang t\u01b0\u01a1ng \u1ee9ng l\u00e0","select":["A. 7,86 g\/$cm^3$ ","B. 8,3 g\/$cm^3$","C. 8,94 g\/$cm^3$ ","D. 9,3 g\/$cm^3$"],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned}& {{m}_{Cu}}=64\\,gam \\\\ & {{d}_{Cu}}=\\dfrac{{{m}_{Cu}}}{{{V}_{Cu}}}=\\dfrac{64}{7,16}\\approx 8,94\\,g\/c{{m}^{3}} \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2003},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" \u0110\u1ed1t n\u00f3ng 1 \u0111o\u1ea1n d\u00e2y th\u00e9p tr\u00ean ng\u1ecdn l\u1eeda \u0111\u00e8n c\u1ed3n m\u1ed9t th\u1eddi gian th\u00ec ph\u1ea7n kh\u00f4ng b\u1ecb \u0111\u1ed1t n\u00f3ng","select":["A. C\u0169ng b\u1ecb n\u00f3ng l\u00ean","B. Kh\u00f4ng b\u1ecb n\u00f3ng l\u00ean","C. Ngu\u1ed9i \u0111i ","D. Kh\u00f4ng d\u1eabn \u0111i\u1ec7n"],"hint":"","explain":"<span class='basic_left'>Do c\u00f3 t\u00ednh d\u1eabn nhi\u1ec7t n\u00ean d\u00e2y th\u00e9p kh\u00f4ng b\u1ecb \u0111\u1ed1t n\u00f3ng c\u0169ng n\u00f3ng l\u00ean<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2004},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" 1 mol kali (nhi\u1ec7t \u0111\u1ed9 \u00e1p su\u1ea5t trong ph\u00f2ng th\u00ed nghi\u1ec7m), kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 0,86 g\/ $cm^3$, c\u00f3 th\u1ec3 t\u00edch t\u01b0\u01a1ng \u1ee9ng l\u00e0: ","select":["A. 50 $cm^3$","B. 45,35 $cm^3$","C. 55,41 $cm^3$","D. 45 $cm^3$"],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned}& {{m}_{K}}=39\\,gam \\\\ & {{V}_{K}}=\\dfrac{{{m}_{K}}}{{{d}_{K}}}=\\dfrac{39}{0,86}\\approx 45,35\\,c{{m}^{3}} \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2005},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" M\u1ed9t s\u1ed1 gi\u1ea5y g\u00f3i k\u1eb9o \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng nh\u00f4m m\u1ecfng. Nh\u00f4m d\u00e1t m\u1ecfng \u0111\u01b0\u1ee3c l\u00e0 do t\u00ednh","select":["A. D\u1eabn \u0111i\u1ec7n ","B. D\u1eabn nhi\u1ec7t","C. D\u1ebbo ","D. \u00c1nh kim"],"hint":"","explain":"<span class='basic_left'>Al c\u00f3 t\u00ednh d\u1ebbo n\u00ean d\u1ec5 d\u00e1t m\u1ecfng<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2006},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Kim lo\u1ea1i c\u1ee9ng nh\u1ea5t l\u00e0","select":["A. Vonfam (W) ","B. \u0110\u1ed3ng (Cu)","C. S\u1eaft (Fe) ","D. Crom (Cr)"],"hint":"","explain":"<span class='basic_left'>Cr l\u00e0 kim lo\u1ea1i c\u1ee9ng nh\u1ea5t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2007},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" 1 mol nh\u00f4m (nhi\u1ec7t \u0111\u1ed9, \u00e1p su\u1ea5t trong ph\u00f2ng th\u00ed nghi\u1ec7m), kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 2,7 g\/ $cm^3$ , c\u00f3 th\u1ec3 t\u00edch t\u01b0\u01a1ng \u1ee9ng l\u00e0","select":["A. 10 $cm^3$ ","B. 11 $cm^3$","C. 12 $cm^3$","D. 13 $cm^3$"],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned}& {{m}_{Al}}=27\\,gam \\\\ & {{V}_{Al}}=\\dfrac{m}{d}=\\dfrac{27}{2,7}=10\\,c{{m}^{3}} \\\\ \\end{aligned}$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2008},{"time":24,"part":[{"title":"Ch\u1ecdn ph\u01b0\u01a1ng \u00e1n \u0110\u00daNG","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a kim lo\u1ea1i canxi l\u00e0 1,55g\/$cm^3$. Gi\u1ea3 thi\u1ebft r\u1eb1ng trong tinh th\u1ec3 canxi c\u00e1c nguy\u00ean t\u1eed l\u00e0 nh\u1eefng h\u00ecnh c\u1ea7u chi\u1ebfm 74% th\u1ec3 t\u00edch tinh th\u1ec3, ph\u1ea7n c\u00f2n l\u1ea1i l\u00e0 khe r\u1ed9ng. T\u00ednh b\u00e1n k\u00ednh nguy\u00ean t\u1eed canxi","select":["A. 1,96 nm","B. 1,96 mm","C. 2,17 nm","D. 2,17 mm"],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned}& \\,1\\,mol\\,Ca=>\\text{ }{{m}_{Ca}}=40\\,gam \\\\ & {{V}_{1\\,mol}}=\\dfrac{40}{1,55}\\approx 25,8\\,c{{m}^{3}} \\\\ & {{V}_{\\text{th\u1ef1c}}}=25,8.\\dfrac{74\\%}{100\\%}=19,092c{{m}^{3}} \\\\ & {{V}_{1\\,\\text{nguy\u00ean t\u1eed}}}=\\dfrac{19,092}{6,{{02.10}^{23}}}\\approx 3,{{17.10}^{-23}} \\\\ & {{V}_{\\text{nguy\u00ean t\u1eed}}}=\\dfrac{4}{3}\\pi {{R}^{3}} \\\\ & =>\\,R\\approx 1,{{96.10}^{-8}}cm\\,=1,96nm \\\\ \\end{aligned}$<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2009},{"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 ri\u00eang c\u1ee7a kim lo\u1ea1i canxi l\u00e0 7,87 g\/$cm^3$. Bi\u1ebft b\u00e1n k\u00ednh nguy\u00ean t\u1eed Fe l\u00e0 1,28 nm. H\u1ecfi trong tinh th\u1ec3 s\u1eaft c\u00e1c nguy\u00ean t\u1eed Fe l\u00e0 nh\u1eefng h\u00ecnh c\u1ea7u chi\u1ebfm bao nhi\u00eau % th\u1ec3 t\u00edch tinh th\u1ec3","select":["A. 60% ","B. 64%","C. 74% ","D. 80%"],"hint":"","explain":"<span class='basic_left'>$\\begin{aligned}& \\,1\\,mol\\,Fe=>\\text{ }{{m}_{Fe}}=56\\,gam \\\\ & {{V}_{1\\,mol}}=\\dfrac{56}{7,87}\\approx 7,12\\,c{{m}^{3}} \\\\ & {{V}_{1\\,\\text{nguy\u00ean t\u1eed}}}=\\dfrac{4}{3}\\pi {{R}^{3}}=\\dfrac{4}{3}\\pi {{(1,{{28.10}^{-8}})}^{3}}\\approx 8,{{78.10}^{-24}} \\\\ & {{V}_{\\text{th\u1ef1c 1 mol}}}=8,{{78.10}^{-24}}.6,02\\,{{.10}^{23}}\\approx 5,3c{{m}^{3}} \\\\ & \\%\\,V\\text{NT}=\\dfrac{{{V}_{\\text{th\u1ef1c 1 mol}1mol}}}{{{V}_{1\\,mol}}}=\\dfrac{5,3}{7,12}.100\\%\\approx 74\\% \\\\ \\end{aligned}$<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2010}],"lesson":{"save":0,"level":2}}