A mixture of Ar, He, and O2 has a total pressure of 1,015 kPa. Argon exerts a partial pressure of 152 kPa and Helium exerts a partial pressure of 305 kPa. What is the partial pressure of oxygen in this mixture?

a. 1,472 kPa

b. 558 kPa

c. 863 kPa

d. 710 kPa

Question

Gummi Bear

Chemistry

6 August, 11:04

A mixture of Ar, He, and O2 has a total pressure of 1,015 kPa. Argon exerts a partial pressure of 152 kPa and Helium exerts a partial pressure of 305 kPa. What is the partial pressure of oxygen in this mixture?

a. 1,472 kPa

b. 558 kPa

c. 863 kPa

d. 710 kPa

+3

Answers (1)

Know the Answer?

Shaun Neal · Answer 1

This one is easy. It's just addition and subtraction. Add the partial pressure of Argon and the partial pressure of Helium:

152 kPa

+305 kPa

457 kPa

Next, subtract the result from the total pressure:

1015 kPa

- 457 kPa

558 kPa

A mixture of Ar, He, and O2 has a total pressure of 1,015 kPa. Argon exerts a partial pressure of 152 kPa and Helium exerts a partial pressure of 305 kPa. What is the partial pressure of oxygen in this mixture?a. 1,472 kPab. 558 kPac. 863 kPad. 710 kPa

A mixture of Ar, He, and O2 has a total pressure of 1,015 kPa. Argon exerts a partial pressure of 152 kPa and Helium exerts a partial pressure of 305 kPa. What is the partial pressure of oxygen in this mixture?

a. 1,472 kPa

b. 558 kPa

c. 863 kPa

d. 710 kPa