Question

class 9 Both the 'law of constant proportion' and 'law of conservation of mass' are together called ?

Answer 1

Answer:

The Law of Constant Composition, discovered by Joseph Proust, is also known as the Law of Definite Proportions. ... The French chemist Joseph Proust stated this law the following way: "A chemical compound always contains the same elements combined together in the same proportion by mass."

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