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The standard molar heats of formation of...

The standard molar heats of formation of ethane, carbon dioxide, and liquid water are `-21.1, -94.1`, and `-68.3kcal`, respectively. Calculate the standard molar heat of combustion of ethane.

A

`-372 kcal//mol`

B

`162 kcal//mol`

C

`-240 kcal//mol`

D

`183.5 kcal//mol`

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The correct Answer is:
A
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