Question

A
A sample of pure water, whatever the
source always cat ontains by
Mass of oxygen and 11.1% by Mass of
hydrogen.
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Answer 1

Answer

A sample of pure water,whatever the source always contains 88.8% by mass of oxygen & 11.1%by mass of hydrogen.
The total amount of percentage is 100, therefore they are divided in a constant ratio.
H2O contains H and O in a fixed ratio by mass. It illustrates the law of constant composition or in other words law of conservation of energy. So, they are divided in a ratio of 1:8 therefore mass of Oxygen is 88.8%.

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Answer 2

Answer:

H is 11.1% by wt &

O is 88.9% by wt

which makes it to

simplest ratio of 1:8

this is acc to law of definite proportions (proposed by Proust)

Explanation:

ALTERNATIVE NAMES: law of definite proportion, sometimes called Proust's law, or law of constant composition

THE LAW STATES THAT:  " a given chemical compound always contain its component elements in fixed ratio and does not depend on its source and method of preparation."

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