I GIVE POINTS FAST TO FIRST PERSON WITH CORRECT ANSWER, ALL ANSWERS MUST BE CORR

Question

I GIVE POINTS FAST TO FIRST PERSON WITH CORRECT ANSWER, ALL ANSWERS MUST BE CORRECT

1 a. Suppose 10 percent of an ideal gas is removed from a gas cylinder while its temperature changes by 125 percent (if given percentage of temperature change is positive, assume it increases). If the initial pressure of the gas is Po, what is the final pressure of the gas in terms of Po.
___ Po

b. Suppose the gauge pressure of the tire on the front passenger tire is 39.1 psi when the outdoor temperature is 100.0oF. Assuming the volume of air in the tire remains constant, what is the gauge pressure of the tire when the temperature drops to 32.0oF.
___ psi

c. Repeat the question assuming the volume of the tires decreases by 12 percent. How important is it to check the pressure of your car tires when it gets cold outside?
___ psi

2. Three thermally insulated containers of equal volume are connected together by thin tubes of negligible volume so that gas can flow from one container to the next when a valve between them is open. Initially, the pressure and temperature in each container is at the same value Po and To, respectively.

The valves between the vessels are opened, and thermal insulation is removed from two of the vessels. Then two vessels are surrounded by heat reservoirs so that their temperatures are maintained at 2To and 2.5To while the third remains at To. What is the final pressure of the system when mechanical equilibrium is reached?
____ Po

Explanation / Answer

1(a) P*V=N*R*T final presure is 0.9*1.25P=1.125P

(b) 0.8806*39.1=34.43 psi

(c)39.91 psi

(2) 2.22P by equating number of moles

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