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July 2022
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Eugene69
1) m = M * n; M(Mg3(PO4)2) = 283г/моль
m(Mg3(PO4)2) = 283г/моль * 0,2моль = 52,6г
2) P2O5 + 3H2O = 2H3PO4
n(H3PO4) = 2n(P2O5) = 0,25моль * 2 = 0,5моль
m = M * n; M(H3PO4) = 98г/моль
m(H3PO4) = 98г/моль * 0,5моль = 49г
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8Dark8
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Answers & Comments
m(Mg3(PO4)2) = 283г/моль * 0,2моль = 52,6г
2) P2O5 + 3H2O = 2H3PO4
n(H3PO4) = 2n(P2O5) = 0,25моль * 2 = 0,5моль
m = M * n; M(H3PO4) = 98г/моль
m(H3PO4) = 98г/моль * 0,5моль = 49г