Odpowiedzi

2009-05-14T22:16:22+02:00
M P₄= 31u × 4 = 124
m Al₂S₃= 27u × 2 + 32u × 3 = 150u
m Al(SO₄)₃= 27u + 32u × 3 + 16u × 12 = 315u
m Cu(OH)₂ = 64u + 16u × 2 + 1u × 2 = 98u
m H₃PO₄ = 1u × 3 + 31u + 16u × 4 = 98u
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