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mw=V*d ; V=60[cm3]; d=1[g/cm3].
mw=60[cm3]*1[g/cm3]=60[g].
ms=1[g].
mr=ms+mw=1[g]+60[g]=61[g].
Cp=(ms*100%)/mr.
Cp=(1[g]*100%)/61[g]=1,64%.
Odp.Cp=1,64%.
b) siarczan (VI) miedzi (II) - CuSO4.
M CuSO4=64[g/mol]+32[g/mol]+64[g/mol]=160[g/mol].
1[mol] CuSO4 - 160[g];
2[mole] CuSO4 - x[g].
x=320[g] CuSO4.
mw=500[g].
ms=320[g].
mr=ms+mw=320[g]+500[g]=820[g].
Cp=(320[g]*100%)/820[g]=39%.
Odp.Cp=39%.