Question

Given 0.32 moles of H2O how many moles of H2 are needed

Answer 1

0.32 moles of H2

Step-by-step explanation:

I will assume the question concerns the production of water from hydrogen and oxygen(?). If theis is correct, start with a balanced chemical reaction.

O2 + 2H2 = 2H2O

2 O and 4 H on both sides of the reaction: it is balanced.

The balanced equation tells us we need 2 moles of H2 for every 2 moles of H2O, a 1:1 molar ratio. If we want 4 moles of H2O, we'd need 4 moles of H2.

If we want 0.32 moles of H2O, we need 0.32 moles of H2.