The temperature of an ideal gas in a sealed 0.40 m3 container is ...

[brutforce]

The temperature of an ideal gas in a sealed 0.40 m3 container is reduced from 400 K to 270 K. The final pressure of the gas is 30 kPA. The molar heat capacity at constant volume of the gas is 28.0 J/mol  K. The work done by the gas is closest to
 
  A) 0.00 kJ.
  B) -19 kJ.
  C) -25 kJ.
  D) 19 kJ.
  E) 25 kJ.

Question 2

An electronic game requires 6 V for operation. With a transformer it can be powered by a 120-V outlet. If the primary has 500 turns, the secondary has
 
  A) 4 turns.
  B) 25 turns.
  C) 50 turns.
  D) more than 50 turns.
  E) none of the above

[djpooyouma]

Answer to Question 1

A

Answer to Question 2

Answer: B