Question

Calculate the number of moles of hydrogen atoms in 45 g of water.
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Answer 1

Answer:

90

Explanation:

Because as There Is 2 atoms of hydrogen and 1 atom oxygen in 1 g water

Answer 2

no of H atoms in a water molecule =2.

moles of H atoms in 1 mol water molecule=2 mole.

moles of H atoms in 45/18 mole of water= 2×(45/18) moles.

Hence number of H atoms in 45g of water = 2×(45/18)×N.

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