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Enter your answer in the provided box From the following data, C(graphite) + O2(0)+ CO2(g) An° . =-393.5 kJ/mol rxn Hy(@) +0,
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Therefore the answer is ,the change in enthalpy is -84.6KJ/mol

According to Hess's Law of Constant Heat Summation,it is stated that for a given chemical process,the net heat-change will be the same whether the process occurs in one or in several steps

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