Three liters of nitrogen combine with 9 L of hydrogen to form 6 L of ammonia. If the molecules of nitrogen and hydrogen have two atoms each, how many atoms of hydrogen and nitrogen are there in one molecule of ammonia?

____ atoms of hydrogen

____ atoms of nitrogen

3 liters N2

to
9 liters H2

9/3 = 3
NH3

To determine the number of atoms of hydrogen and nitrogen in one molecule of ammonia, we need to use the concept of molar ratios.

1. First, let's calculate the number of moles of nitrogen, hydrogen, and ammonia involved in the reaction:
- Nitrogen: 3 L * (1 mol/22.4 L) = 0.134 moles
- Hydrogen: 9 L * (1 mol/22.4 L) = 0.402 moles
- Ammonia: 6 L * (1 mol/22.4 L) = 0.268 moles

2. Next, we need to determine the mole ratio between nitrogen, hydrogen, and ammonia. From the balanced chemical equation, we know that the ratio is 1:3:2 respectively:
- Nitrogen: 0.134 moles * (1 mole/0.268 moles) = 0.5 moles
- Hydrogen: 0.402 moles * (1 mole/0.268 moles) = 1.5 moles

3. Now, we need to determine the number of atoms in one mole of each substance:
- Nitrogen: 0.5 moles * (6.022 x 10^23 atoms/mole) = 3.01 x 10^23 atoms
- Hydrogen: 1.5 moles * (6.022 x 10^23 atoms/mole) = 9.03 x 10^23 atoms

Finally, we can conclude that there are:
- 9.03 x 10^23 atoms of hydrogen in one molecule of ammonia, and
- 3.01 x 10^23 atoms of nitrogen in one molecule of ammonia.