Question

the total amount of heat produced by a fuel having calorific value of 30 kJ/kg was found to be 60,000 joules. How much fuel was burnt in this process?

Answer 1

Answer:

Here in this case 30 KJ/kg means that 30 KJ heat energy is produced by burning 1 kg of the fuel . Now let us take that x kg fuel is burnt to get 60000 J or 60 KJ of energy . Therefore , amount of fuel burnt is = 60/30 = 2 Kg . Hope it helps you