Question

if on burning 40g of a fuel 8459 j heat is produced find its calorific value​

Answer 1

Answer:

40,000KJ/kg

Explanation:

Given: Weight of fuel burnt = 4.5kg

To find : Calorific value = ?

Formula used : Calorific value =\frac{Amount\ of\ heat\ produced}{Weight\ of\ fuel\ burnt}Weight of fuel burntAmount of heat produced

Solution :

Calorific value = \frac{180000}{4.5}4.5180000

∴ Calorific value = 40,000 kJ/kg

Answer 2

Answer:

211475 kJ/kg

EXPLANATION:

Given:

Weight of fuel burnt = 40g

in kg = 0.04 kg

heat produced = 8458 KJ

Calorific value = Amount if heat produced÷Fuel burnt

or 8459 ÷ 0.04

or 211475

Therefore, calorific value = 211475 KJ/Kg