Dalton's Law of Partial Pressures
Explore Dalton's Law of Partial Pressures with this worksheet for Grade 9 Science students, covering gas mixtures and total pressure calculations.
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Dalton's Law of Partial Pressures
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. What does Dalton's Law of Partial Pressures state?
The total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the individual gases.
The pressure and volume of a gas are inversely proportional.
The volume of a gas is directly proportional to its temperature.
The rate of diffusion of a gas is inversely proportional to the square root of its molar mass.
2. A mixture of gases contains nitrogen, oxygen, and carbon dioxide. If the partial pressure of nitrogen is 0.78 atm, oxygen is 0.21 atm, and carbon dioxide is 0.01 atm, what is the total pressure of the gas mixture?
1.00 atm
0.50 atm
1.50 atm
0.99 atm
3. According to Dalton's Law, the total pressure of a gas mixture is the of the partial pressures of the individual gases.
4. The pressure exerted by a single gas in a mixture is called its pressure.
5. Dalton's Law of Partial Pressures applies only to ideal gases.
True
False
6. In a mixture of gases, each gas exerts pressure independently of the other gases.
True
False
7. A container holds a mixture of helium and oxygen gases. The total pressure in the container is 2.5 atm. If the partial pressure of helium is 1.8 atm, what is the partial pressure of oxygen?
8. Explain why Dalton's Law is important in understanding respiratory processes in living organisms.