4Р + 5О2 = 2Р2О5
n (O2) = V/Vm = 56/22.4 = 2.5 моль
n (P) = 4*2.5/5 = 2 моль
m (P) = n*M = 2*30 = 60г
4Р + 5О2 = 2Р2О5
n (O2) = V/Vm = 56/22.4 = 2.5 моль
n (P) = 4*2.5/5 = 2 моль
m (P) = n*M = 2*30 = 60г