 Practice Problems Confined Gases

Directions: On this worksheet you will be examining properties of a confined ideal gas. omit
Question 1
Use the following information for question 1-6 on this worksheet.
An enclosed gas of 240 grams of argon gas (M = 40) follows the process 1 2 3 as shown. T1 = 37ºC and T2 = 652ºC.

How many moles of helium are present in the container? omit
Question 2  In which process was heat removed from the gas? omit
Question 3  What is the value of T3? omit
Question 4  If P1 equals 180 kPa, then what is the value of P2? omit
Question 5  What is the value of V1? omit
Question 6  In which process was no work done on or by the gas? omit
Question 7  The final three questions do NOT refer to the PV diagram shown in Question #1.

37 joules of heat energy are transferred to a sample of gas along path AC. As a result, the internal energy of the gas  omit
Question 8  3.6 grams of water vapor (M = 18.0) are confined in a cylindrical container having a movable, yet 'snuggly-fitting,' lid that slides up and down to accommodate changes in pressure and volume. What is the average velocity of a water molecule (H2O) in the container if the vapor is at room temperature (23ºC)?  omit
Question 9  While the temperature of the gas remains at 23ºC, the volume of the container is 0.074 m3. If the surface area of the lid of the container is 0.2 m2 then what is the magnitude of the force exerted against the lid by the gas molecules?