Question

no of moles present 90 g of water molecules​

Answer 1

Answer:

for water we have 2 hydrogen atoms and one oxygen, so the atomic weight ofwater is 1+1+16=18, so a mole of wateris 18 grams. We have 90g of water so we have 90/18 = 5 moles of water.

Explanation:

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Answer 2

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.