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

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Presentation Transcript
marker board review
Marker Board Review

You should have a marker board, a marker, and a paper towel to erase!

Ready???

GO!!!

slide2
#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 2.20 atm, calculate the partial pressure of hydrogen.
answer
Answer:

Partial pressure of

hydrogen = 2.47 atm

slide4
#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?
answer1
Answer:

70 K

It will change from 293 K to 223 K,

which is a difference of 70 K.

slide6
#3 - A piston filled with oxygen gas has a pressure of 240.0 mm Hg at 225 mL. If the pressure is decreased to 0.150 atm, what will be the new volume of the gas?
answer2
Answer:

474 mL

Don’t forget to change P1 to atm!

slide8
#4 - A sample of gas at 150.0 K has a pressure of 900.0 mm Hg. It is cooled until the pressure reads 700.0 mm Hg.

What is the new temperature in both Kelvin and degrees Celsius?

answer3
Answer:

116.7 K

and

-156.3oC

5 a 250 0 ml oxygen sample is measured at 25 0 o c and 720 0 mm hg how many moles is this
#5 - A 250.0 mL oxygen sample is measured at 25.0oC and 720.0 mm Hg. How many moles is this?
answer4
Answer:

0.00968 moles O2

answer5
Answer:

762 mL

answer6
Answer:

4.48 L

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