B. 2 C. 4 D. 6 How does the frequency of collisions of the molecules of a gas wi
ID: 578282 • Letter: B
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B. 2 C. 4 D. 6 How does the frequency of collisions of the molecules of a gas with the walls of their container change as the amount of gas is decreased at constant temperature and volume? Justify your answer on the basis of the kinetic molecular theory of gases. 8. A group of chemistry students have injected 0.356 moles of a gas into an evacuated, constant volume container at 25 oC. Now the students want to heat the gas at constant pressure by allowing some of the gas to escape during the heating. How many moles of gas must be released if the temperature is raised to 225 oC 9.Explanation / Answer
Q8
if gas decreases, then there are less molecules, therefore, expect less collisions per unit time/area
if T decreases, the velocity of gas decreases as well, therefore, less collisions per unit time/area
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