Question

2 NH3 + 3 CuO → 3 Cu + N₂ + 3 H₂O

In the above equation, how many grams of N₂ can be made when 18.4 moles of CuO are consumed?

Answer 1

→ 22.9 g of N2.

Step-by-step explanation:

→ The molar mass of CuO is 63.5 + 16 = 79.5

→ The molar mass of N2 is 2×14 = 28

According to the equation, for every 3 molecules of CuO, one molecule of N2 is made.

Therefore,

3×79.5 g of CuO make 28 grams of N2.

Therefore,

195 g of CuO make

`28×(195/3×79.5) = 22.9 g of N2.`