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Question

How many g of CH4 produce 425.6 kcal in: CH4+2O2CO2+2H2O+212.8 kcal

A
8 g
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B
24 g
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C
64 g
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D
16 g
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E
32 g
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Solution

The correct option is E 32 g
Answer(E)

if 212.8kcal heat given then moles of CH4 produced=1mole
so 425.6kcal heat given then moles of CH4 produced=2mole
so total weight of CH4=162=32g


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