ChemistryEnergy changesJAMB
The combustion of 1 mol of methane releases 890 kJ. How much heat is released when 4 g of methane burns? (C = 12, H = 1)
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Answer: D. 222.5 kJ
M(CH₄) = 16, so 4 g = 0.25 mol; 0.25 × 890 = 222.5 kJ.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.