The calorific value of diesel is 40000kj/kg.calculate the mass of diesel required to produce 8000 kj of heat energy. PLEASE CAN ANYONE CAN ANSWER THIS QUESTION.

1. The calorific value is 40,000 kJ/ kg that is 40,000 kJ of energy is produced by 1 kg of fuel.

2. For 8,000 kJ of energy fuel required = $\frac{1}{40,000}\times 8000 = 0.2 kg$

3. So 0.2 kg of fuel is required to get 8,000 kJ of energy.