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Question- White Phosphorus, P4, combusts in oxygen, O2, to produce heat, light, and P4O10 according the following reaction:

P4 + 5O2 --> P4O10

If 67.2 of P4 is burned, 1620kj of energy is evolved. What is the molar enthalpy of combustion of P4 if the process is carried out at constant pressure?

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