Предмет: Химия, автор: andreypustylnik2000

обчисліть масову частку металу у кальцій сульфаті

Ответы

Автор ответа: knanastasis27

Відповідь:
W=n*Ar/Mr
Mr(CaSO4)=40+32+16*4=136
M(Ca)=1*40\136=0,29*100=29%
M(SO4)=32+16*4=96; 1*96\136=0,7*100=7%
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