Question

in 90 grams of water how many molecules are present in it​

Answer 1

90 g of water will contain 30.11×10^(23) molecules

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Answer 2

Answer:

5 molecules,

Answer. A mole of a compound is a number of grams equal to the atomic weight of a molecule of the compound, so for water we have 2 hydrogen atoms and one oxygen, so the atomic weight of water is 1+1+16=18, so a mole of water is 18 grams. We have 90g of water so we have 90/18 = 5 moles of water.

Explanation:

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