Question

define law of conservation of mass​

Answer 1

The law of conservation of mass states that the mass of a closed system will remain constant in a chemical reaction. In other words, mass can neither be created nor destroyed in a chemical reaction. This law was first formulated by Antoine Laurent Lavoisier in 1789.

For example: When 100g of mercuric oxide is heated, 92.6 g of mercury and 7.4 g of oxygen are obtained as products.i.e. 2HgO→ 2Hg + O2In this case mass of reactant =100gMass of products = Mass of Hg + Mass of O2= 92.6 + 7.4 = 100gThus, we obtain Mass of product = Mass of reactantsThis verifies the law of conservation of mass.

This law is a universal to which no exception has been observe.

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Answer 2

Explanation:

LAW OF CONSERVATION OF MASS

It states that mass can neither be created nor be destroyed . It was first formulated by Antoine Lavoisher.