Question

calorafic value of cow dung cake is 7000kj.how much cow dung cake is reqired to produced heat energy of 35000 kj​

Answer 1

Answer:

Explanation:

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)

Answer 2

Explanation:

it is not advised to burn cow dung as a fuel because it undergoes slow combustion and thus releases mor pollutants.