Question

the compound ammonia is composed of nitrogen and hydrogen atoms. if 2 atoms of nitrogen completely react with 6 atoms of hydrogen to from 2 molecules of ammonia, which best describes the number of hydrogen atoms present in the 2 molecules of ammonia?

Explanation:

Step1: Apply the law of conservation of mass

According to the law of conservation of mass, in a chemical reaction, the number of atoms of each element is conserved.

Step2: Count hydrogen atoms

We are given that 6 atoms of hydrogen react. Since hydrogen atoms are conserved in the reaction to form ammonia, the number of hydrogen atoms in the 2 molecules of ammonia is equal to the number of hydrogen atoms that reacted.

Answer:

6