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The number of molecules in a mole of a substance is the same. One mole of any substance contains 6.023 x 10 raised to the power 23.
So one mole of O2 has 6.023 x 10(23) Oxygen molecules,
One mole of water contains 6.023 x 10(23) H2O molecules, and so on.

Answer: The number of molecules of [tex]H_2O[/tex] in given amount will be [tex]6.022\times 10^{23}[/tex]

Explanation:

We are given:

Moles of water = 1 mole

Moles of oxygen molecule = 1 mole

According to the mole concept:

1 mole of a compound will contain [tex]6.022\times 10^{23}[/tex] number of molecules.

So, 1 moles of [tex]H_2O[/tex] will contain [tex]1\times 6.022\times 10^{23}=6.022\times 10^{23}[/tex] number of molecules.

And, 1 moles of [tex]O_2[/tex] will contain [tex]1\times 6.022\times 10^{23}=6.022\times 10^{23}[/tex] number of molecules.

Hence, the number of molecules of [tex]H_2O[/tex] in given amount will be [tex]6.022\times 10^{23}[/tex]

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