Ammonia (NH3) is widely used as a fertilizer
and in many household cleaners. How much
ammonia is produced when 7.26 mol of hydrogen gas react with an excess of nitrogen
gas?

82.28g

Explanation:

Given parameters:

Number of moles of hydrogen gas = 7.26 moles

Unknown:

Amount of ammonia produced = ?

Solution:

We have to write the balanced equation first.

              N₂    +   3H₂    →    2NH₃

Now, we work from the known to the unknown;

                  3 moles of H₂ will produce 2 moles of NH₃

                7.26 mole of H₂ will produce  = 4.84 moles of NH₃

Molar mass of NH₃ = 14 + 3(1) = 17g/mol

Mass of NH₃  = number of moles  x molar mass = 4.84 x 17 = 82.28g

3 hours because it is a decent distance.