how many moles of NH3 does it take to make 8.0 mol of H20 according to the reaction shown below?

4NH3 + 5O2 --> 4NO + 6H2O

I REALLY NEED HELP WITH THIS AS I AM LOST. PLEASE PROVIDE NOTES.

1 answer

the ratio of NH3 to H2O is 4:6 or 2:3

NH3 / 2 = H2O / 3

NH3 = 2/3 * H2O

2/3 * 8 = ?