Question

The number of molecules in 1.0 mole of H2O is _____ as in one mole of O2.

Answer 1

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 2

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

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 $6.022\times 10^{23}$ number of molecules.

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

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

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