Senior Science 4

If gas A has a molar mass of 4 g/mol and gas B has a molar mass of 16 g/mol, how does the effusion rate of gas A compare to gas B?

• Gas A effuses 4 times faster than gas B

• Gas A effuses 2 times faster than gas B

• Gas A effuses 16 times faster than gas B

• Gas A effuses the same rate as gas B

What does Graham's Law of Effusion help explain?

• Why gases mix uniformly

• Why lighter gases move faster than heavier gases

• Why gases condense at low temperatures

• Why gas volumes decrease at high pressures

 According to Graham's Law, what is the effect of increasing the temperature on the rate of effusion of a gas?

• The rate of effusion decreases

• The rate of effusion stays the same

• The rate of effusion increases

• The rate of effusion becomes unpredictable

In a balanced chemical equation involving gases, how is gas volume typically measured?

• In moles

• In liters at standard temperature and pressure (STP)

• In grams

• In Celsius degrees

 In a reaction where 1 mole of gas reacts with 1 mole of another gas, what is the volume ratio of the gases involved at STP?

• 1:1

• 2:1

• 3:1

• 1:2

 In a stoichiometric calculation involving gases, if the volume of one gas is given, how can you find the volume of another gas involved in the reaction at constant temperature and pressure?

• By using the Ideal Gas Law

• By using the molar volume of gas at STP

• By finding the molar mass of each gas

• By using the density of the gases

Which state of matter has the lowest kinetic energy level?

• solid

• liquid

• gas

• None of the Above

Tags

NGSS.HS-PS3-2

Which state of matter has the highest kinetic energy level?

• solid

• liquid

• gas

• None of the above

Tags

NGSS.HS-PS3-2

Which state of matter has the lowest compressibility?

• solid

• liquid

• gas

• None of the above

Which state of matter does not take the shape of the container?

• solid

• liquid

• gas

• None of the above