Verified Answer :

From literature, the heat of combustion of methane is 55.5 MJ/kg methane. to account for the 2 mol of methane given we convert 2 mol to kg which is determined by multiplying 2 mol by molec.weight (16g/mol) divided by 1000 to convert to kg. This is equal to 0.032 kg methane. We multiply this to 55.5 MJ/kg.The total heat released is 1.776 MJ.

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