The amount of heat energy given off when 5.0 moles of methane are burned is –4010 KJ
Balanced equation
CH₄ + 2O₂ —> CO₂ + 2H₂O ΔH = –802 KJ
From the balanced equation above,
1 mole of CH₄ combust to release –802 KJ of heat energy
How to determine the heat energy
The heat energy produced by 5 moles of methane can be obtained as follow:
From the balanced equation above,
1 mole of CH₄ combust to release –802 KJ of heat energy.
Therefore,
5 mole of CH₄ will combust to release = 5 × –802 = –4010 KJ of heat energy.
Thus, the heat energy released from the reaction is –4010 KJ
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