1. Warm Up 7.1
Fluorine 300K occupies a volume of 500mL. To what temperature should it be lowered to bring the volume to 300mL?
A sample of 1.5 atm had its pressure decreased to 0.50 atm producing a new volume of 750 mL. What was its orginal volume?
Find the number of grams of CO2 that exert a pressure of 785 a volume of 32.5 L & a temperature of 32C.

2. Warm Up 7.1- Answer
Fluorine 300K occupies a volume of 500mL. To what temperature should it be lowered to bring the volume to 300mL?

3. Warm Up 7.1- answers
2. A sample of 1.5 atm had its pressure decreased to 0.50 atm producing a new volume of 750 mL. What was its orginal volume?

4. Warm Up 7.1-answers
3. Find the number of grams of CO2 that exert a pressure of 785 a volume of 32.5 L & a temperature of 32C.

5. Dalton’s Law
Pt = P1+P2+P3+ …..
constant V & T)

6. Dalton’s Law-Example
Air contains O2, N2, CO2, and trace amounts of other gases. What is the partial pressure of oxygen (POxygen) at sea level, if N2 and CO2 pressures are kPa, 0.94 kPa, respectively?

7. Graham’s Law MM2 MM1 Rate of Diffusion/Effusion1 =
Rate: speed, distance per time
Hint: The lighter gas should be 1.
MM2 MM1

8. Diffusion vs Effusion

9. Diffusion
spreading of gas; gas particles move from areas of great concentration to areas with lower concentration until uniform.

10. Diffusion

11. Diffusion
What are some examples of diffusion?

12. Effusion
gas escapes a container through tiny holes or pores of a container.

13. Effusion

14. Effusion
if hole is small enough & gas particles big enough no effusion occurs.

15. Effusion
What are some examples of effusion?

16. Applying Graham’s Law
Which gas effuses faster, NH3 or CCl4? How much faster does it effuse?