Question

A given compound always contain exactly the same proportion of elements by weight.name the law and who proposed it

Answer 1

HEYA!!
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➡The Law is " Law of Constant / Fixed Proportion . It was given by Louis Proust in 1799.

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⏪It states that two elements in order to form a compound always combine in a fixed ratio by mass irrespective of the source of material or the method of preparation.

⏪For example, H2O ; the ratio is always fixed which is 1: 8

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