Molecular Mass and Gas Behavior

The video explores whether carbon monoxide (CO) is heavier than air. It explains that CO is slightly lighter than air, using the periodic table to calculate the mass of CO and comparing it with the components of air, primarily nitrogen and oxygen. Despite CO being lighter, the difference is minimal, and air circulation prevents any significant separation. The video concludes that CO does not sink or rise noticeably in a room.

What is the main question addressed in the video regarding carbon monoxide?

• Whether carbon monoxide is visible

• Whether carbon monoxide is toxic

• Whether carbon monoxide is heavier than air

• Whether carbon monoxide is flammable

What elements make up carbon monoxide?

• Carbon and sulfur

• Carbon and oxygen

• Carbon and nitrogen

• Carbon and hydrogen

How is the molecular mass of carbon monoxide calculated?

• By adding the masses of carbon and hydrogen

• By adding the masses of carbon and oxygen

• By multiplying the masses of carbon and nitrogen

• By subtracting the mass of oxygen from carbon

What percentage of air is made up of nitrogen?

• 78%

• 21%

• 99%

• 50%

What is the primary gas needed for human respiration?

• Nitrogen

• Carbon dioxide

• Oxygen

• Helium

What is the molecular mass of nitrogen gas (N2)?

• 32.00 grams per mole

• 12.01 grams per mole

• 16.00 grams per mole

• 28.02 grams per mole

Why doesn't oxygen gas sink to the bottom of a room?

• Because air circulation mixes it with other gases

• Because it is not present in the air

• Because it is heavier than carbon monoxide

• Because it is lighter than nitrogen

What is the molecular mass of carbon monoxide?

• 12.01 grams per mole

• 28.01 grams per mole

• 16.00 grams per mole

• 32.00 grams per mole

What is the conclusion about carbon monoxide's behavior in a room?

• It remains evenly distributed due to air circulation

• It forms a separate layer above oxygen

• It sinks to the floor

• It rises to the ceiling

What is the main factor that prevents carbon monoxide from rising or sinking significantly in a room?

• Air circulation

• Its low density

• Its chemical reactivity

• Its high density