Question

5kg of a fuel A produces 20000kJ of heat energy and 4kg of a fuel B produces 30000kJ of heat energy. Find the calorific value of both fuel A and fuel B​

Answer 1

Answer:

In an experiment 5 kg of a fuel was completely burnt, the calorific value of the fuel for the heat produced measured to be 200,000 kJ is 40,000 kJ/kg.

• Total mass of fuel in the experiment = 5 kg

• Total heat produced in the experiment = 200,000 kJ

• Heat produced by burning 1 kg of fuel can be expressed as,

                                  formula = kj/kg

                  200,000 kJ/5 kg = 40,000 kJ/kg.

So, calorific value of fuel is given by 40,000 kJ/kg.

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