Question

Дано:
P2O5
Найти:
w(P)-?
w(O)-?
P:O

Answer 1

Mr(P2O5)=31*2+16*5=142
W(P)=Ar(P)*n/Mr(P2O5) *100%=31*2/142 *100%=44%
W(O)=Ar(O)*n/Mr(P2O5) *100%=16*5/142 *100%=56%