If the standard molar enthalpy change for combustion of graphite powder is , the amount of heat generated on combustion of 1 g of graphite powder in kJ (Nearest integer):

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Strategy:
 Determine the energy released from a specific mass of graphite using its molar enthalpy of combustion.

Step 1: Convert mass to moles
Moles of .

Step 2: Calculate heat

.
Rounding to nearest integer: .

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