Question

Given: The equation for the synthesis of ammonia is H2(g) + N2(g) → NH3(g). If 12.0 grams of hydrogen are used up by the reaction, how many grams of ammonia will be produced?

Answer 1

The answer to your question is 68 g

Step-by-step explanation:

Data

mass of H₂ = 12 g

mass of NH₃ = ?

Balanced chemical reaction

3H₂ + N₂ ⇒ 2NH₃

Process

1.- Calculate the molar mass of H₂

H₂ = 1 x 6 = 6

NH₃ = 2[(14 x 1) + (3 x 1)]

= 2[14 + 3]

= 2[17]

= 34 g

2.- Use proportions to find the mass of NH₃

6 g of H₂ --------------- 34 g of NH₃

12g of H₂ ---------------- x

x = (12 x 34) / 6

x = 408/6

x = 68 g of NH₃