- The number of gas particles in each container is the same because, according to Avogadro's Hypothesis, equal volumes of gases at the same temperature and pressure contain an equal number of particles.
- To form water molecules (H₂O) with no leftover gas, combine two hydrogen molecules (H₂) with one oxygen molecule (O₂) to produce two water molecules. Since there are 6 hydrogen molecules and 3 oxygen molecules shown, they will react completely to form 6 water molecules.
Parent Tip: Review the logic above to help your child master the concept of chemistry unit 4 worksheet 2 answers.