When 3.00 moles of hydrogen molecules and 1.50 moles of oxygen molecules react, they form 3.00 moles of water according to the reaction below. how many grams of hydrogen were required to form 3.00 moles of water?

The answer to your question is: 6 grams of hydrogen

Explanation:

Data

3.0 moles of hydrogen

1.5 moles of oxygen

3 moles of water

# of grams of hydrogen required to form 3 moles of water?

Equation

                  H₂    +   1/2 O₂        ⇒        H₂O

                3 mole    1.5 moles           3 moles

 Atomic weight of H₂ = 2 g

                         1 mole   2 g

                         3 moles    x

                          x = 3(2)/1 = 6 grams of hydrogens