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1. Liquid ethyl alcohol at 77.0°F is burned in 100.% theoretical air. Determine the heat produced per kgmole of fuel when the products are at 540.°F. The molar specific enthalpy of formation of this fuel is -277:69 MJ/kgmole:

2. Methane gas (CH₄) at -60.0°C is burned during a severe winter with 200.% theoretical air at the same temperature. The products of combustion are at 300.°C. Assuming constant specific heats, find the heat released per kgmole of fuel.

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