Ответ:
w2(P2O5)=17.34
Объяснение:
m1(P2O5)=(m(H3PO4)*w(P2O5)):100%=(400*10%):100%=40 гр
m2(P2O5)=40+35.5=75.5 гр
m2(H3PO4)=400+35.5=435.5 гр
w2(P2O5)=(m2(P2O5):m2(H3PO4))*100%=(75.5:435.5)*100%=17.34%
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Ответ:
w2(P2O5)=17.34
Объяснение:
m1(P2O5)=(m(H3PO4)*w(P2O5)):100%=(400*10%):100%=40 гр
m2(P2O5)=40+35.5=75.5 гр
m2(H3PO4)=400+35.5=435.5 гр
w2(P2O5)=(m2(P2O5):m2(H3PO4))*100%=(75.5:435.5)*100%=17.34%