Question

How many ammonia molecules (NH3) are needed to balance the equation shown below?

3 H2 + N2 —> _____
A. 2 NH3
B. 3 NH3
C. 4 NH3
D. 5 NH3

Answer 1

A. 2 NH3

Step-by-step explanation:

3 H2 + N2 --> 2 NH3

On the left hand side of the equation, there are 6 hydrogen atoms and 2 nitrogen atoms. On the right hand side of the equation, there are 6 hydrogen atoms and 2 nitrogen atoms. They are both equal so the equation is balanced.