The Calcium Hydroxide Experiment Demonstrates That

question 8

Multiple Choice

The calcium hydroxide experiment demonstrates that

• A) there is a much lower concentration of O₂ in expired air than in atmospheric air.
• B) there is a much higher concentration of CO₂ in expired air than in atmospheric air.
• C) there is a much higher concentration of O₂ in expired air than in atmospheric air.
• D) there is a much lower concentration of CO₂ in expired air than in atmospheric air.
• E) the concentrations of CO₂ in expired air and atmospheric air are approximately equal.