Ответ:
дано
m(CaCO3) = 4 g
---------------------
m(Ca3(PO4)2)-?
3CaCO3+2H3PO4-->Ca3(PO4)2+3H2O+3CO2
M(CaCO3) = 100g/mol
n(CaCO3) = m/M = 4 / 100 = 0.04 mol
3n(CaCO3) = n(Ca3(PO4)2)
n(Ca3(PO4)2 = 0.04 / 3 = 0.013 mol
M(Ca3(PO4)2) = 310 g/mol
m(Ca3(PO4)2) = n*M = 0.013 * 310 = 4.03 g
ответ 4.03 г
Объяснение:
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Answers & Comments
Ответ:
дано
m(CaCO3) = 4 g
---------------------
m(Ca3(PO4)2)-?
3CaCO3+2H3PO4-->Ca3(PO4)2+3H2O+3CO2
M(CaCO3) = 100g/mol
n(CaCO3) = m/M = 4 / 100 = 0.04 mol
3n(CaCO3) = n(Ca3(PO4)2)
n(Ca3(PO4)2 = 0.04 / 3 = 0.013 mol
M(Ca3(PO4)2) = 310 g/mol
m(Ca3(PO4)2) = n*M = 0.013 * 310 = 4.03 g
ответ 4.03 г
Объяснение: