Ответ:
W = n * Ar * 100% / Mr
P2O5
Ar (P) = 31 Mr (P2O5) = 2 * 31 + 5 * 16 = 62 + 80 = 142
W1 (P) = 2 * 31 * 100% / 142 = 43,7%
H3PO4
Mr (H3PO4) = 98
W2 (P) = 1 * 31 * 100% / 98 = 31,7%, отже W (P) в P2O5 більше
Объяснение:
음, 그래서
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Ответ:
W = n * Ar * 100% / Mr
P2O5
Ar (P) = 31 Mr (P2O5) = 2 * 31 + 5 * 16 = 62 + 80 = 142
W1 (P) = 2 * 31 * 100% / 142 = 43,7%
H3PO4
Mr (H3PO4) = 98
W2 (P) = 1 * 31 * 100% / 98 = 31,7%, отже W (P) в P2O5 більше
Объяснение:
음, 그래서