Question

Дано:
P2O5
P2O3
Найти:
W1 (P)?
W2(P) ?

Answer 1

P2O5 - оксид фосфора (V)

Mr (P2O5) = 31 * 2 + 16 * 5 = 62 + 80 = 142

W (P) = 62 / 142 * 100 = 43.66 %

P2O3 - оксид фосфора (III)

Mr (P2O3) = 31 * 2 + 16 * 3 = 62 + 48 = 110

W (P) = 62 / 110 * 100 = 56.36 %