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The heats of combustion of carbon and ca...

The heats of combustion of carbon and carbon monoxide are -393.5 and `-285.5 kJ * mol^(-1)` , respectively . The heat of formation (in kJ) of carbon monoxide per mole is -

A

`-110.5`

B

`110.5`

C

676.5

D

`-676.5`

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