25. Solving a chemistry problem
13. Calculate the standard heat of formation of CH4N2O (tv), if at T=298 K and P=1.0133*105 N/m2 its heat of combustion is ΔHsg=-634.749*103 J/mol. Combustion products: CO2(gas),H2O(l), N2
C O2=CO -393.795*103 J/mol;
H2 1 / 2O2 \u003d H2O -286.043 * 103 J / mol.
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