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If the standard molar enthalpy change fo...

If the standard molar enthalpy change for combustion of graphite powder is `-2.48 xx 10^(2)kJ mol^(-1)`, the amount of heat generated on combustion of 1g of graphite powder is ______kJ. (Nearest integer).

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The correct Answer is:
21
`underset("1 gram")(C("graphite")) + O_2 to CO_2(g) , DeltaH = - 2.48 kJ" mole"`
Total heat released `= 2.48 xx 1/12 xx 10^2`
` = 20.67 = 21`.
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