Question

Calculate number of moles of water in 18gm of water

Answer 1

Answer:

Explanation:

No. Of moles = Mass/Molecular Mass

Molecular Mass of H2O=2+16=18

hence, No of Moles = 18/18=1

Answer is 1 Mole

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Answer 2

Answer:

Density of water =1 gm/ml

Since 1 ml of water weights =1 gm

∴ 1800 ml water weighs =1800 gm

Now, 18 gm of water contains =1 mole

∴ 1800 gm of water contains = 1*180/18

=100 moles