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    In the standard AQA chemistry AS book on the Enthalpy change section it tells us we have to convert Celsius to kelvin in the equation:

    q = mc (delta)T

    However in numerous past papers such as June 2010 Q.8d the temperature is in Celsius, 8C why don't we convert it?
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    You only have to convert temperature into kelvin for the perfect gas equation in AS unit 1 (pV=nRT) whereas in unit 2 the calculation is for q=mc(delta)T and delta t is temperature change so it doesn't make a difference whether its in kelvin or celcius.
 
 
 
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