Question

State the law of conservation of energy with example

Answer 1

Law of conservation of energy states that energy càn neither be created nor destroyed.
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Answer 2

According to the law of conservation of energy mass can neither be created nor be destroyed it can just be converted from one form to another .
For example
2H2 + O2 —— 2h2O
In this reaction if 4 gram of hydrogen is reacting with 32 gram of oxygen to give 36 gram h2O acc to calculation from atomic mass and acc to law of conservation of mass
2(2) + 2(16) = 2 (18)
4 gram + 32 gram = 36 gram