n (S) = m : M = 32 : 32 = 1 моль
n (P) = m : M = 15.5 : 31 = 0.5 моль
n (P2O5) = 0.2 моль
Ответ: 0.2 моль
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n (S) = m : M = 32 : 32 = 1 моль
n (P) = m : M = 15.5 : 31 = 0.5 моль
n (P2O5) = 0.2 моль
2P + 5S = P2S5
Ответ: 0.2 моль