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Posted by on Tuesday, September 25, 2012 at 11:39pm.

When 0.312g of glucose was burned in a bomb calorimeter (heat capacity 641 J/K) the temperature rose by 7.739 K. Calculate the standard enthalpy of combustion and the standard internal energy of combustion.

I've calculated the standard enthalpy but am unsure of how to go about finding the standard internal energy. Any suggestions?

  • Chemistry - , Wednesday, September 26, 2012 at 12:39am

    I'm inclined to think that E = qv.
    E = q+w and w = p*delta v. In a closed system, however, the p*delta v must be zero since delta v is zero and E = q.

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