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C1C26 Câu 27:!W"=F""*"6>.1 6)&<D!/#E<$1&Z!$"#&&<?@A1 B2/_&H_T?HU0!/#Z!?*/,N A.  B. $ C. 6 D. $ Câu 28:)&=#/!O($2BCv&%_+8!HD!/@A"6=F"&G/,2L22<0/,N A. !/#"C B. #/!;&!EO" C. #/!TO&./$E./$&U D. #/!/#E#=EO" Câu 29:(1B#/)&$!"#$%!&=>"("6+x$?I+8!B/44/1•"6$!"#$%!&",."7</M.1 #/;z =>"("6?I+8! C644$9B•0!"#$%!&",.*N A. "*  1"*99 B. "*  1 "*99 C. "*  1 "*99 D. K"*  1 "*99 Câu 30:F"&G$"&#QR?@AM<&Z#-V!N A. $!6D$!"#$%!& B. )&6D6/<#QR+,)&6DPE<&#QR0 C. $!6D6/<#QR0 D. !h<v&%_6/<#QR Câu 31:*M&",#;$<?F.*&_"-$QRZ"R";#+8!O&./$!"N A. 4!O&./$!"+,H$/!!4E#%!& B. "$&E!!4E#%!&+,4!=O"./$!" C. -O"QO"$!"+,4!O&./$!" D. $#"!$+,=O"./$!"0 Câu 32:%!&6/<&$!T99‚  ƒ  T  U99U/,M&*&_" A. -$QR0 B. /@„"6&_". C. $%!&0 D. &E<"6&_"0 Câu 33:!/#Z!'H!&345"6+8!44/+,+8!H_/  &Z#E$$!;>"=l<D!H3"$<0'/, A. 60 B. /0 C. \"0 D. [O0 Câu 34:#/!O?@A4d"6/,HO#43"&…"6A=/,N A. =#/!TO&./O&$E./$&U B. =#/!TO&!/O"&OEO=$/$&U C. =#/!T+!".//#E<$U D. =#/!T<EOP#$"4O!&U Câu 35:I.=F"1L6$&!"-)&+8!!W<;<M&I$=>"("6LB•1HD!/@A"66/<#QR&<?@A/, A. `1 6 B. 2126 C. 1`6 D. B126 Câu 36:a;>"%<M&&<D;~"6Hi"6H*!1"6@X!&${"3M&=>"("6/, A. %O"/</#QR+,"$&E!"!&E$&0 B. %O"/</#QR+,$%!&"!&E!?r0 C. %O"/</#QR+,6/!%OE#/&E!"!&E$&0 D. %O"/</#QR+,$%!&;<"P<E!?r0 Câu 37:#3!#"H!/#Z!;$<N\" p :S" p :! p :[O p :- p &(&b&_"#%!*$6!>4{"/,N A. - p †S" p †! p †[O p †\" p B. \" p †S" p †! p †[O p †- p C. S" p †! p †\" p †- p †[O p D. S" p †\" p †! p †[O p †- p Câu 38:3&-!a<",#;$<?F.;$!e A. f{<&b+‡&&@X"6V&EZ"6&3!/w"6t"„?)"6+‡&&@X"6V&EZ"6&3!Ev"0 B. ',=t"6/,Y"A=<D!"$&E!I$3$%!&-k#0 C. fd"6%,=t"66!r&EG$&E#"6"@8("6;z&Z#H7&&I$+8!3!#"$ p 16 p 0 D. M&-k#Ev"/,M&I.7<($36D$%!&-k#Hi"6"#0 Câu 39:q#Z!&RHi"6&<)&R*$/,N A. !/#"C B. R#/#" C. R+!;# D. R&J Câu 40:Ed"6A= T6U   2 &<?@A C1`T6U=#/!OTˆU0!W<;<M&=>"("6&Ed"6A=/, A. C`• B. `• C. • D. LB• nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn Cho M: C = 12, H = 1, O = 16, Na = 23, K = 39, Ag = 108, N = 14, Ba = 137, Ca = 40, Fe = 56, Cl = 35.5, S = 32, Zn = 65; Al = 27; Br = 80; Mg = 24; . 35:I.=F"1L6$&!"-)&+8!!W<;<M&I$=>"("6LB•1HD!/@A"66/<#QR&<?@A/, A. `1 6 B. 212 6 C. 1`6 D. 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