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15 January, 01:34

A chemical reaction release 55.2 kcal. How many kilojoules does this correspond to?

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  1. 15 January, 05:02
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    231.0 kJ

    Explanation:

    Chemical reactions releasing heat energy are exothermic reactions.

    The chemical reaction released 55.2 kcal

    1 kcal is equivalent to 4.184 kJ

    Therefore 55.2 kcal is equivalent to - 4.184 kJ/kcal x 55.2 kcal

    the energy in kJ is - 231.0 kJ
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