Question

when coal burns it leaves ash behind. Ash so produced is lighter than the coal which has burnt .Justify the decrease in mass in the light of law of conversation of mass​

Answer 1

Answer:

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Answer 2

Explanation:

The law of conservation of mass states that mass cannot be created nor destroyed.

In a burning log, the initial mass of the wood and the ashes that are left behind after it burns are different, which would seem to violate the law of conservation of mass.

However, the rest of the mass is actually in the form of CO2 and H2O that were also produced as the log burned.