Дано: | m(P)-3.1г. | -----------| Найти:V(O2)-?
4P + 5O2 = 2P2O5 1) n(P) = m/M = 3.1/31 = 1 2) n(O) = 1,25 3) M(O2) = 32 4) m(O2) = 32 *1,25 = 15