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In an experiment 4.5kg of fuel was completely burnt. The heat produced was measured to be 180,000kg. What is the calorific value of the fuel?

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    I assume that the heat produced is 180,000 Joules and not kilograms, since Joules is the unit for energy

    Calorific value = Heat energy Produced/Mass of fuel
    = 180,000/4.5
    = 40,000 J/kg

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