The standard heats of the following combustion reactions have been determin experimentally: 1. 2. 3. C_H+7/2 O, Đ 2 CO+3 H,O: C+0₂ → CO₂: H₂ + 1/2O₂ → H₂O: AH-1559.8kJ/mol AĤ=-393.5kJ/mol AĤ=-285.8kJ/mol Use Hess's law and the given heats of reaction to determine the standard heat of reacti 2C+ 3 H₂ → C₂H6 ΔΗ = ?

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