KMT and Gas Behaviors

Which of all the following are units of pressure (choose all that apply)

• mm Hg

• dm³

• atm

• Pa

• K

The temperature of a gas in degrees Celsius is 43.2°C. The temperature of the same gas in Kelvin is ______ K.

How many significant figures does the measurement 0.07090 L have?

• 6

• 5

• 4

• 3

• 2

A sample of gas has a pressure in atmospheres of 0.3400 atm. The pressure in mm Hg is ______ mm Hg. (1 atm = 760 mm Hg)

Which of the following are correct statements according to the kinetic molecular theory.

• Gas particles travel in straight lines

• Gas particles are attracted to each other by intermolecular forces

• Gas particles are assumed to have no volume

• The pressure is a measure of the average kinetic energy of the gas particles.

Tags

NGSS.HS-PS3-2

Real gases deviate from ideal gases most at

• high temperature and high pressure

• high temperature and low pressure

• low temperature and low pressure

• low temperatures and high pressure

Which of the following explain why real gases deviate from ideal gas behaviour? (choose all that apply)

• intermolecule forces between molecules do exist

• gases do have 100% elastic collisions

• gases do have volume

• gases travel in straight lines

Which gas would you expect to deviate most from ideal behaviour?

• H₂

• Ne

• CH₄

• C₄H₁₀

Why does ammonia (NH₃) gas deviate significantly more from ideal gas behaviour than phosphine (PH₃)

• it has more mass

• it is much larger

• it has much stronger attractions between molecules

• it has less mass