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Question
How much heat is evolved if 3.2 g of methane is burnt and if the heat of combustion of methane is -880 kJ mol−1?
How much heat is evolved if 3.2 g of methane is burnt and if the heat of combustion of methane is -880 kJ mol−1?
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Solution
The correct option is C 176 kJ
16 g CH4 gives 880 kJ of heat.
3.2 g CH4 will give 880/16×3.2=176kJ
16 g CH4 gives 880 kJ of heat.
3.2 g CH4 will give 880/16×3.2=176kJ
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