2nd Quiz on Gases

Is the collision made by gases elastic or inelastic?

What are the values for STP?

• 0 K and 1 atm
• 0^oC and 1 atm
• 760 K and 1 atm
• 273^oC and 1 atm

Collisions where no energy is lost are

• epileptic

• elastic

• erectic

• erratic

An important idea of the kinetic theory is that particles of matter 

• are in constant motion
• have different shapes
• have different colors
• are always fluids

How are pressure and temperature related?

• Directly

• Indirectly

• They aren't related

Gas pressure is caused by

• gas molecules colliding with surfaces
• gas molecules condensing to a liquid
• gas molecules hitting other gas molecule
• barometers

• Since all flask have same amount of gas, flask 1 has the least pressure
• Since all flask have same amount of gas, flask 2 has the least pressure
• Since all flask have same amount of gas, flask 3 has the least pressure
• Since all flask have same amount of gas, flask 4 has the least pressure

According to kinetic molecular theory, in which of the following gases will the root mean square speed of the molecules be the highest at 200ºC?

• SF₆

• H₂O

• HCl

• Cl₂

• None, the molecules of all gases have the same root mean square speed at any given temperature.

The volume of a 2.49 g sample of gas is 752 mL at 1.98 atm and 62ºC. What is the gas?

• NO₂

• SO₃

• SO₂

• Ne

• NH₃