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Перша4ка
@Перша4ка
July 2022
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Рассчитайте молекулярную массовую долю элемента в веществе:
Ba(OH)2
Al2(SO4)3
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Answers & Comments
krioira
Mr(
Ba(OH)2) = 137+2*16+2*1=171
W(Ba)=137/171 = 0.80=80%
W(O)=32/171=0.19=19%
W(H)=2/171=0.01=1%
Mr(
Al2(SO4)3)=2*27+3*32+12*16=311
W(Al)=54/311=0.17=17%
W(S)=64/311=0.21=21%
W(O)=196/311=0.62=62%
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Answers & Comments
W(Ba)=137/171 = 0.80=80%
W(O)=32/171=0.19=19%
W(H)=2/171=0.01=1%
Mr(Al2(SO4)3)=2*27+3*32+12*16=311
W(Al)=54/311=0.17=17%
W(S)=64/311=0.21=21%
W(O)=196/311=0.62=62%