Week 5 Homework 2.docx

# Week 5 Homework 2.docx - (Answer Key Included Below 1 A...

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(Answer Key Included Below) 1. A mixture of 3 moles of argon and 7 moles of hydrogen has a total pressure of 1 atm. What is the partial pressure of argon? a. 0.7 atm b. 319 mmHg c. 866 mmHg d. 591 mmHg e. 0.3 atm 2. A sample of oxygen is collected over water at a total pressure of 790.7 mmHg at 19°C. The vapor pressure of water at 19°C is 16.5 mmHg. The partial pressure of the O 2 is 3. A small amount wet of hydrogen gas (H 2 ) can be prepared by the reaction of zinc with excess hydrochloric acid and trapping the gas produced in an inverted tube initially filled with water. If the total pressure of the gas in the collection tube is 789.7 mmHg at 25°C, what is the partial pressure of the hydrogen? The vapor pressure of water is 23.8 mmHg. 4. A vessel with a volume of 52.5 L contains 1.80 g of nitrogen gas, 0.703 g of hydrogen gas, and 69.9 g of argon gas. At 25°C, what is the pressure in the vessel?

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