Question

How many atoms of hydrogen in 0.1 mole of water?

Answer 1

hey

1mole =6.022×10^23 atoms
0.1 mole=6.022×10^23 ×0.1

=6.022×10^22 atoms

hope this helps

Answer 2

Given:

0.1 moles of water.

To find:

We have to find the number of atoms of hydrogen.

Solution:

To determine the number of hydrogen atoms we have to follow the below steps as follows-

The chemical formula of water is $H_2O$.

Thus one mole of water has two hydrogen atoms.

Thus we can write-

1 mole of water has $6.022×10^{23}×2=12.044×10^{23}$ number of hydrogen atoms.

Thus 0.1 mole of water has $12.044×10^{23}×0.1=12.044×10^{22}$ number of hydrogen atoms.

Thus 0.1 mole of water has $12.044×10^{22}$ number of hydrogen atoms.