Science, asked by Aditya3701, 3 months ago

plz plz plz fast

lesson- Atoms and Molecules

std- 9th ​

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Answered by monikay263
0

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I am in 7th and then also watching this question . And thanks for the points.

Answered by 722492
0

(Answer no 1) the postulate that atom can either be created or destroyed in a chemical reaction is the result of of conservation of mass .

(Answer no 2) The postulate that a chemical compound always consists of the same element combine together in the same proportion by mass is the law of definite proportion.

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