Practice quiz Graham

Find the relative rate of diffusion for the gases chlorine, Cl₂ and ethane, C₂H₆

• 2.40

• 1.20

• 0.65

• 0.32

One mole of H2S gas escapes from a container by effusion in 77 seconds. How long would it take one mole of NH3 gas to escape from the same container

• 54

• 108

• 216

• a lot of seconds

At a certain temperature, molecules of methane gas, CH4 (16) have an average velocity of 0.098 m/s. What is the average velocity of carbon dioxide (44) molecules at this same temperature

• 1.60

• .147

• 1.21

• .059

the molar mass of carbon dioxide is 44 g/mol and that of nitrogen is 28 g/mol, which gas will effuse more rapidly? What will be the ratio of the rates of effusion of nitrogen to carbon dioxide?

• 1.25

• 0,60

• 0,49

• 0.21

Compute the relative velocities of H₂ and CO₂ through a fine pin-hole in a barrier. (hydrogen(2) to CO₂ (44) rate)

• 4.67

• 2.35

• 0.67

• 0.32