How much ammonia can be obtained from 90 g of hydrogen?

The reaction for producing ammonia is described by the following chemical reaction equation.
N2 + 3H2 = 2NH3;
In accordance with the coefficients of this equation, to obtain two moles of ammonia, it is necessary to take three moles of hydrogen.
Let’s find the amount of substance in 90 grams of hydrogen.
M H2 = 1 + 1 = 2 grams / mol;
N H2 = 90/2 = 45 mol;
From this amount you can get:
N NH3 = N H2 x 2/3 = 45 x 2/3 = 30 mol;
Let’s find the mass of this amount of matter.
M NH3 = 14 + 3 = 17 grams / mol;
Let’s multiply the amount of ammonia by its molar mass.
m NH3 = 17 x 30 = 510 grams