Question

ammonia is commonly used as a fertilizer for plants. it is made when nitrogen gas and hydrogen gas react under specific conditions. consider the following reaction: 3 molecules of nitrogen (n₂) react with 9 molecules of hydrogen (h₂) to produce some amount of ammonia (nh₃). complete the table below. during this reaction, how many molecules of ammonia (nh₃) are produced?

Explanation:

Step1: Calculate the number of \(H\) atoms

Each \(H_2\) molecule has \(2\) \(H\) atoms. There are \(9\) \(H_2\) molecules. So the number of \(H\) atoms is \(9\times2 = 18\).

Step2: Calculate the number of \(N\) atoms

Each \(N_2\) molecule has \(2\) \(N\) atoms. There are \(3\) \(N_2\) molecules. So the number of \(N\) atoms is \(3\times 2=6\).

Step3: Calculate the number of \(NH_3\) molecules

In an \(NH_3\) molecule, there is \(1\) \(N\) atom and \(3\) \(H\) atoms.
The number of \(N\) atoms is \(6\). Since each \(NH_3\) has \(1\) \(N\) atom, the number of \(NH_3\) molecules from \(N\) - atom perspective is \(6\).
The number of \(H\) atoms is \(18\). Since each \(NH_3\) has \(3\) \(H\) atoms, the number of \(NH_3\) molecules from \(H\) - atom perspective is \(\frac{18}{3}=6\). So the number of \(NH_3\) molecules is \(6\).

Answer:

• For the number of \(H\) atoms: \(18\)
• For the number of \(N\) atoms: \(6\)
• For the number of \(NH_3\) molecules: \(6\)