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13-05-2020
Chemistry

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heat of combustion of a substance with initial mass of 100g combusts, final mass of 95g and releasing 2000kj of energy

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oladayoademosu oladayoademosu

19-05-2020

Answer:

0.4 kJ/kg

Explanation:

The change in mass is 100 g - 95 g = 5 g = 0.005 kg

Energy released = 2000 kJ

eat of combustion = Energy released/change in mass = 2000 kJ/0.005 kg = 0.4 kJ/kg

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