(b) In an experiment, 2 kg of a fuel was completely burnt. The heat produced
was measured to be 30,000kJ. Calculate the calorific value of the fuel.
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We begin by defining what calorific value of a fuel means.
Calorific value — The heat produced by combustion of a fuel mass.
It is expressed in Joules per Kilograms.
The formula is :
Calorific value = Heat energy in joules / Mass of fuel.
Doing the substitution we have :
500000000 Joules / 5 kg = 100000000 Joules per kg
= 100000kJ/Kg
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