History of the Law of Conservation of Mass:
The ancient Greeks were the first to propose the idea of the law of this law ,since the total amount of matter in the universe is constant. In 1789, Antoine Lavoisier formally described the law of conservation of mass as a fundamental principle in physics.
Portrait of Antoine Lavoisier:
The scientist who is credited with discovering the law of conservation of mass. The law states that mass remains constant – that is, it cannot be created or destroyed – despite chemical reactions or physical transformations occurring within an isolated system. In other words, the mass of the resulting substances is always equal to the mass of the reactants in a chemical reaction.
Law of Conservation of Energy – Mass
Einstein modification :
Einstein later modified this law in the law of conservation of energy – mass, and this law shows that the total mass and energy in a system that remains constant.
This modification also demonstrates that mass can convert to energy and back. However, the law of conservation of mass is still a useful concept in chemistry, since the energy produced or expended in a typical chemical reaction is a tiny amount of mass.
We can visualize chemical reactions as a rearrangement of atoms and bonds, where the number of atoms involved in the reaction remains unchanged.
This assumption allows us to represent the chemical reaction in the form of a balanced equation in which the number of moles of any element is the same on both sides of the equation.
Another useful application of this law is to determine the mass of the reactants and gaseous substances. If the mass of the reactants and the product, solid or liquid, is known; Any remaining mass will be the mass of the gas.
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