An adiabatic compression is performed on an ideal gas. The final ...

[karen]

An adiabatic compression is performed on an ideal gas. The final pressure is equal to 0.560 times the initial pressure and the final volume equals 1.50 times the initial volume. What is the adiabatic constant for the gas?
 
  A) 1.33
  B) 1.43
  C) 1.48
  D) 1.52
  E) 1.67

Question 2

3.0 moles of an ideal gas with a molar heat capacity at constant volume of 4.9 cal/(mol  K) and a molar heat capacity at constant pressure of 6.9 cal/(mol  K) starts at 300 K and is heated at constant pressure to 320 K,
 
  then cooled at constant volume to its original temperature. How much heat flows into the gas during this two-step process?
  A) 710 cal
  B) -720 cal
  C) 0.00 cal
  D) 120 cal
  E) -120 cal

[jomama]

Answer to Question 1

Answer: B

Answer to Question 2

Answer: D