How many mole of H2O are required to produce 4.5 moles of HNO3 according to the ff reaction?

Question

3NO3 + H2O = 2HNO3 + NO

Answer 1

well, it takes 1/2 as many moles of H2O as it produces HNO3
so, what's 1/2 of 4.5?

Answer 2

I'm familiar with N2O, NO, NO2, N2O3, N2O4, and N2O5 but NO3 is a new one on me. Let me point out that the equation is not balanced so oobleck gave you the right answer for the equation you posted but your equation is wrong to start.

Answer 3

I am betting on NO2 :)