Question

已知 CaCO3(s)=CaO(s)+CO2(g);H=+175.7KJ/mol.C(s)+O2

Answer 1

CaCO3(s)=CaO(s)+CO2(g);H=+175.7KJ/mol

100 175

1*10^6 X

C(s)+O2(g)=CO2(g);H=—393.5KJ/mol

12 393.5

M*10% X

M=59.5

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