Consider the synthesis of ammonia 3 H2 + N2 à 2 NH3 If a student were to react 38.5 g of nitrogen gas, how many moles of ammonia would be produced?

2.75 mol

Explanation:

Given dа ta:

Mass of Nitrogen = 38.5 g

Moles of ammonia produced = ?

Solution:

Chemical equation:

N₂ + 3H₂ → 2NH₃

Number of moles of nitrogen:

Number of moles = mass / molar mass

Number of moles = 38.5 g / 28 g/mol

Number of moles = 1.375 mol

Now we will compare the moles of ammonia and nitrogen from balance chemical equation.

N₂ : NH₃

1 : 2

1.375 : 2*1.375 = 2.75 mol

Thus 2.75 moles of ammonia are produced from 38.5 g of nitrogen.