1. Marker Board Review
You should have a marker board, a marker, and a paper towel to erase!
Ready???
GO!!!

2. #1 - A balloon is filled with 3 gases: nitrogen, oxygen, and hydrogen
#1 - A balloon is filled with 3 gases: nitrogen, oxygen, and hydrogen. The total pressure of the gases is 8.51 atm. If the partial pressure of nitrogen is 3.84 atm, and the partial pressure of oxygen is atm, calculate the partial pressure of hydrogen.

3. Answer:
Partial pressure of
hydrogen = 2.47 atm

4. #2 - A sample of gas is 7. 89 L at 293 K
#2 - A sample of gas is 7.89 L at 293 K. How many degrees must the temperature decrease to change the volume to 6.00 L?

5. Answer: 70 K It will change from 293 K to 223 K,
which is a difference of 70 K.

6. #3 - A piston filled with oxygen gas has a pressure of 240
#3 - A piston filled with oxygen gas has a pressure of mm Hg at 225 mL. If the pressure is decreased to atm, what will be the new volume of the gas?

7. Don’t forget to change P1 to atm!
Answer:
474 mL
Don’t forget to change P1 to atm!

8. What is the new temperature in both Kelvin and degrees Celsius?
#4 - A sample of gas at K has a pressure of mm Hg. It is cooled until the pressure reads mm Hg.
What is the new temperature in both Kelvin and degrees Celsius?

9. Answer:
116.7 K
and
-156.3oC

10. #5 - A 250. 0 mL oxygen sample is measured at 25. 0oC and 720. 0 mm Hg
#5 - A mL oxygen sample is measured at 25.0oC and mm Hg. How many moles is this?

11. Answer:
moles O2

12. #6 – 560. 0 mL of nitrogen are measured at 28. 0oC and 1. 50 atm
#6 – mL of nitrogen are measured at 28.0oC and 1.50 atm. Calculate the volume under STP.

13. Answer:
762 mL

14. #7 - Determine how many liters 8
#7 - Determine how many liters 8.80 g carbon dioxide gas would occupy at STP.

15. Answer:
4.48 L