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Chapter 8: Q. 8.54 (page 278)

Suppose a mixture contains helium and oxygen gases. If the partial pressure of helium is the same as the partial pressure of oxygen, what do you know about the number of helium atoms compared to the number of oxygen molecules? Explain.

Short Answer

Expert verified

They have the same number of helium atoms to that of the oxygen molecules.

Step by step solution

01

Given Information

We need to explain the number of helium atoms compared to the number of oxygen molecules.

02

Explanation

Pressure is directly proportional to the number of moles of gas. One mole of gas contains the same number of particles regardless of their identity.

The partial pressure of helium is the same as that of the partial pressure of oxygen, then the number of helium atoms is similar to the number of oxygen molecules.

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Most popular questions from this chapter

An airplane is pressurized with air to 650mmHg.(8.7)

a. If air is 21%oxygen, what is the partial pressure of oxygen on the plane?

b. If the partial pressure of oxygen drops below 100mmHg. passengers become drowsy. If this happens, oxygen masks are released. What is the total cabin pressure at which oxygen masks are dropped?

A sample containing1.50molesofNegas has an initial volume of 8.00L. What is the final volume, in liters, when each of the following occurs and pressure and temperature do not change?

a. A leak allows one-half of Neatoms to escape.

b. A sample of3.50molesofNeis added to the 1.50molesofNegas in the container.

c. A sample of 25.0gof Neis added to the 1.50molesofNegas in the container.

A I0.0-L balloon contains helium gas at a pressure of 655 mmHg. What is the final pressure, in millimeters of mercury, when the helium is placed in tanks that have the following volumes, if there is no change in temperature and amount of gas?

a. 20.0 L

b. 2.50 L

c. 13 800 mL

d. 1250 mL

A 124mLbubble of hot gas initially at 212°Cand 1.80atmis emitted from an active volcano. What is the final temperature, in degrees Celsius, of the gas in the bubble outside the volcano if the final volume of the bubble is 138mLand the pressure is 0.800atm, if the amount of gas does not change?

A sample of helium gas has a volume of 6.50Lat a pressure of 845mmHgand a temperature of 25°C. What is the final pressure of the gas, in atmospheres, when the volume and temperature of the gas sample are changed to the following if the amount of gas does not change?

a. 1850mLand325K

b. 2.25Land12°C

c.12.8Land47°C
See all solutions

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