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parshyaa
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How can we prove the law of conservation of mass ? I said prove not the verification, how lavoiser decided that yes this law is followed by every chemical reaction, is there a proof
parshyaa said:what must have made him satisfied that it holds for every chemical reaction
As Feynman says, the first step is to guess the correct law. Lavoisier did that based on some experimental data that had been accumulated. He did not need "proof" before promulgating his theory. It was up to scientists to then test the theory to see if the Law's predictions matched experiment.parshyaa said:i simply wanted to know what must have made him satisfied that it holds for every chemical reaction(except for nuclear reaction due to Einstein's equation), so finally what made him to made this conclusion as a law.
Andrew Mason said:chemical reactions release or absorb energy and, in doing so, they lose or gain mass.
DrStupid said:Conservation laws apply to isolated systems and isolated systems cannot relase or absorb energy.
The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction. This means that the total mass of the reactants must be equal to the total mass of the products.
To prove the law of conservation of mass, we can conduct a closed system experiment where the mass of the reactants is measured before and after the reaction. If the mass of the products is the same as the mass of the reactants, then the law is proven.
Examples of everyday phenomena that demonstrate the law of conservation of mass include burning a match, melting ice, and baking a cake. In each of these processes, the total mass of the reactants is equal to the total mass of the products.
The law of conservation of mass is important in chemistry because it is a fundamental principle that governs all chemical reactions. It allows scientists to predict and understand the outcome of reactions and to accurately measure the amount of substances involved.
There are no known exceptions to the law of conservation of mass. However, in nuclear reactions, a small amount of mass can be converted into energy according to Einstein's famous equation, E=mc². This does not violate the law of conservation of mass as the total mass and energy in a closed system are still conserved.