Calculate Moles of H2 from 6 Moles of H20

[oneplusone]

Homework Statement

Suppose you have 6 moles of H20. You want to calculate how many moles of H2 you have. how many is it?

Homework Equations

Avagradro's number: 6.02*10^{23}

The Attempt at a Solution

I got to the equation:
2H_2+O_2\rightarrow 2H_2O
I kind of figured out that since H is diatonic, we need to do that^.

Although from here I don't know how to proceed.

 

[Borek]

One molecule of H₂O contains two atoms of H, which is equivalent to one molecule of H₂.

One dozen molecules of H₂O contains two dozens of atoms of H, which is equivalent to one mole of molecules of H₂.

One mole of molecules of H₂O contains ____ moles of atoms of H, which is equivalent to ____ mole of molecules of H₂.

Six moles of molecules of H₂O contain ____ moles of atoms of H, which is equivalent to ____ moles of molecules of H₂.