You compress a gas in an insulated cylinder no heat flows into or out of the gas. The gas pressure is fairly low, so treating the gas as ideal is a good approximation. When you measure the pressure as a function of the volume of the gas, you obtain these results:

(a) Graph log (p) versus log (V), with p in Pa and V in m³. Explain why the data points fall close to a straight line.

(b) Use your graph to calculate g for the gas. Is the gas monatomic, diatomic, or polyatomic?

(c) When p = 0.101 atm and V = 2.50 L, the temperature is 22.0^oC. Apply the ideal-gas equation and calculate the temperature for each of the other pairs of p and V values. In this compression, does the temperature of the gas increase, decrease, or stay constant?

Transcribed Image Text:

V (L) P (atm) 2.50 2.02 1.01 1.48 0.50 0.202 0.361 0.952 0.101 0.139