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18 February, 13:14

2. An exothermic reaction releases 86.5 kJ. How many kilocalories of

energy are released?

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Answers (1)
  1. 18 February, 13:17
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    20.67 kcal of energy is released.

    Explanation:

    It is given that, an exothermic reaction releases 86.5 kJ. We need to convet kJ to calories.

    Since,

    1 kcal = 4.184 kJ

    So,

    1 kJ = 0.239 kcal

    For 86.5 kJ,

    86.5 kJ = (0.239 * 86.5) kcal

    86.5 kJ = 20.67 kcal

    So, 20.67 kcal of energy is released.
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