Convert 558 mmHg to atm. Select one: a. 18.6 atm b. 0.734 atm c. 38.0 atm d. 4.2

Question

Convert 558 mmHg to atm.

Select one:

a. 18.6 atm

b. 0.734 atm

c. 38.0 atm

d. 4.24 X 105 atm

A 2.55 L gas sample in a cylinder with freely moveable piston is initially at 25.0ºC. What is the volume of the gas when it is heated to 145ºC? (at constant pressure)

Select one:

a. 14.8 L

b. 0.440 L

c. 3.58 L

d. 1.82 L

Calculate the total pressure (in atm) of a mixture of 0.0250 moles of O2 and 0.0150 moles of He in a 2.0 L flask at 20ºC.

Select one:

a. 0.481 atm

b. 0.301 atm

c. 0.0328 atm

d. 0.180 atm

If you double the volume of a constant amount of gas at constant temperature, what happens to the pressure?

Select one:

a. the pressure does not change

b. the pressure doubles

c. the pressure is one-half the initial pressure

d. the pressure quadruples

A gas sample has an initial volume of 55.2 mL, an initial temperature of 35.0ºC, and an initial pressure of 735 mmHg. The volume decreased to 48.8 mL and the temperature is increased to 72.5ºC. What is the final pressure?

Select one:

a. 186 mmHg

b. 401 mmHg

c. 933 mmHg

d. 1.72 X 103 mmHg

Effusion is the process in which a gas flows through a small hole in a container.

Select one:

True

False

Explanation / Answer

1.

1 mmHg = 0.001316 atm

558 mmHg = how much atm ?

do the cross multiplication

= 0.001316 x 558 / 1

= 0.7343 atm

Navigate

• Browse (All)
• Browse C
• Subjects

---