In the explosion of a hydrogen filled balloon, 0.50 g of hydrogen reacted with 4.0 g of oxygen to form how many grams of water vapor? (water vapor is the only product)

Answer 1

Do the following:

1) Balance the following:
H2 + O2 -> H2O

2) Find the limiting reagent. The reactant (H2 or O2?) that produces the lesser amount of the product (H2O).

http://www.chem.tamu.edu/class/majors/tutorialnotefiles/limiting.htm

Answer 2

2.25g

Answer 3

4.5g