Question: Acetylene gas (C2H2) is burned completely during a steady-flow combustion process. The fuel and the air enter the combustion chamber at 25C, and the products

Acetylene gas (C2H2) is burned completely during a steady-flow combustion process. The fuel and the air enter the combustion chamber at 25°C, and the products leave at 1500 K. If the enthalpy of the products relative to the standard reference state is 404 MJ/kmol of fuel, the heat transfer from the combustion chamber is
(a) 177 MJ/kmol (b) 227 MJ/kmol (c) 404 MJ/kmol
(d) 631 MJ/kmol (e) 751 MJ/kmol

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