1. Bell-work September 25 If the partial pressure of oxygen is 2.3 kPa, the total pressure in the system is 5 kPa, and there are 8.2x10 23 particles of oxygen in the system, how many total gas particles are present?

2. Homework Check 1) The partial pressure of Fluorine is 300 kPa in a mixture of gasses where the total pressure is 760 kPa. If there are 3.5x10 23 particles in the sample, how many of them are Fluorine? 2) A gas sample is 25% Chlorine, 70% Nitrogen, and 5% Helium. If the partial pressure of Helium is 1.3 atm, what is the partial pressure of nitrogen? (Hint: find the total pressure first)

3. Final Round of Partial Pressure! Miss Pahls 9/24/14

4. On Your Own Try: Challenge Problem: What is the total pressure of a system that has 40 parts carbon dioxide and 15 parts hydrogen where the partial pressure of hydrogen is 40 kPa?

5. On Your Own Again: A Gas is a mixture of Hydrogen and Oxygen in a 3:4 ratio. The sample of gas contains 4.5x10 23 particles at 250 K and it takes up 30 L of space. What is the partial pressure of Oxygen?

6. For Tomorrow: Look over past quizzes Look over Gas Behavior Test IN DETAIL Look at Partial Pressure Homework Assignments Look at Study guide. Come with your brain!