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How much heat (in kJ) should be supplied...

How much heat (in kJ) should be supplied to a rigid conducting vessel of volume V litres, so that 0.5 mole of C is formed in the reaction :
`A(g)+B(g)to C(g),Delta H=+7.6kJ`
Take `R= 8"J"//"K mole"`, T=300 K

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