Answer to Question #195260 in General Chemistry for Jess

Question

a. How many moles of oxygen gas are required to produce 1.00 mole of water?

Answer 1

$2H_2+O_2\to 2H_2O$

2 mole of water produces 1 mole of oxygen

So 1 mole of water produce 0.5 mole of oxygen.

Number of moles of $O_2$ is 0.5