Answer:
[tex]1.8\times1024[/tex]
Explanation:
In water (h2o) the molecule contains three atoms, you have two hydrogen atoms and you have one oxygen atom and in one mole of water you would have 6.02 * 1023 but you have three and not one. Which means you would have "1.8 * 1024" molecules in h2o.
Hope this helps.