Dear bw08f;
Your equation is balanced now, but what Arkcon noted is that you forgot that Hydrogen is also a diatomic molecule as Oxygen is.
Do you know how grams must be converted into moles?
If yes, then you can solve it as normal "Stoichiometry Problem".
So you may apply the recipe/scheme from the Topic "Stoichiometry Problem":
"Stoichiometry Problem (#23'025) (http://www.chemicalforums.com/index.php?topic=23025.0)"
Therein is also an Example Diagram: How to do a "Stoichiometry Problem".
The same recipe you may then use to solve your other problems.
Good Luck!
ARGOS++