Question

Calorafic value of cake is 7000kg how much cake are requierd to produce heat energy of 35000 j

Answer 1

Calorific value of wood is 18000 kj/kg.how much wood is required to produce heat energy of 108000 kj/kg - 1176368.

Answer 2

We know that the amount of heat produced by the complete combustion of 1 KG of fuel is called its calorific vallue.It is expressed in "kilojoule per KG(KJ/KG)".

Since, 7000KJ of heat energy is produced in= 1 kg of fuel(cow dung cake)

So, 3500KJ of heat energy is produced in = 35000/7000=5 Kg of fuel(cow dung cakes)

Hope, it'll help you........