Определите массовые доли всех элементов в следующих веществах: SO3, H2O, NO2, CaCO3,
Na2SO4, Zn(NO3)2, AlPO4, C6H12O6, CuSiO3, (NH4)2CO3.
Na2SO4, Zn(NO3)2, AlPO4, C6H12O6, CuSiO3, (NH4)2CO3.
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Answers & Comments
W(S)=32/80=0.4=40%
W(O)=48/80=0.6=60%
Mr(H2O)=2*1+16=18
W(H)=2/18=0.11=11
W(O)=16/18=0.89=89%
Mr(NO2)=14+2*16=46
W(N)=14/46=0.3=30%
W(O)=32/46=0.7=70%