Gases

Question 1

A sample of gas is enclosed in a container of fixed volume. Identify which of the following statements are true. Check all that apply.

Revolt · Accepted Answer

If the container is cooled, the gas particles will lose kinetic energy and temperature will decrease.; If the gas particles move more quickly, they will collide more frequently with the walls of the container and pressure will increase.; If the gas particles move more quickly, they will collide with the walls of the container more often and with more force, and pressure will increase.

Question 2

A sample of a gas is placed inside a cylinder that is a fixed size. The cylinder is heated as additional gas is added to it. What will most likely happen to the pressure of the gas inside the cylinder?

Revolt · Accepted Answer

It will increase.

Question 3

Fluorine (F2) or chlorine (Cl2):

Revolt · Accepted Answer

fluorine

Question 4

A container with a specific volume “V” changes to “2V.” What happens to the average distance between gas molecules? Assume that pressure and temperature of the gas remain constant.

Revolt · Accepted Answer

Increase

Question 5

Which of these changes most likely results in an increase in the volume of a gas?

Revolt · Accepted Answer

decreasing the pressure on the gas

Question 6

Identify the examples of diffusion in the list below. Check all that apply.

Revolt · Accepted Answer

A teacher takes the cap off a permanent marker. A few minutes later, students at the back of the classroom complain about the odor of the marker.; A cooking school student burns a piece of toast. Soon, the entire kitchen smells like burnt toast.; Toxic fumes produced by a chemical factory are detected in the air in a town several miles away.

Question 7

For each pair of gases, select the one that most likely has the highest rate of effusion. Use the periodic table if necessary.Oxygen (O2) or hydrogen (H2):

Revolt · Accepted Answer

hydrogen

Question 8

Methane (CH4) or carbon tetrachloride (CCl4):

Revolt · Accepted Answer

methane

Question 9

Nitrogen (N2) or ammonia (NH3):

Revolt · Accepted Answer

ammonia

Gases Answers

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