Near Sea Level, the Atmosphere Is Composed of 78% Nitrogen

question 52

Multiple Choice

Near sea level, the atmosphere is composed of 78% nitrogen and 20% oxygen. Other trace gases make up the remaining 2%. At room temperature,

• A) all the gas molecules move at the same speed.
• B) the nitrogen gas molecules, on average, move faster than the oxygen molecules.
• C) the nitrogen gas molecules, on average, move slower than the oxygen molecules.
• D) some nitrogen gas molecules could move faster than some of the oxygen gas molecules.
• E) some nitrogen gas molecules could move slower than some of the oxygen molecules.
• F) B and D
• G) C and D
• H) B, D, and E