Question

why do some fuels have a higher calorific value?


First and detailed answer will be marked as Brainliest​

Answer 1

Answer:

 can be observed that carbonhas the highest reaction oxidation enthalpy per unit of volume, while hydrogen has the highest oxidation enthalpy per unit of mass. The presence of carbon in afuel molecule may lead to a high energy density (high heating value per unit of volume).

Answer 2

Answer:

Hey buddy here is your answer......

Explanation:

The calorific value of a fuel should be high, so that large quantities of heat can be obtained from a small quantity of coal. ...  It should have low ash content since the presence of ash reduces the heating value of coal.

Hope this helps you......and don't forget to mark me as brainlist.......okk