In a thermodynamic process, the internal energy of a system in a ...

[swpotter12]

In a thermodynamic process, the internal energy of a system in a container with adiabatic walls decreases by 800 J. Which statement is correct?
 a. The system lost 800 J by heat transfer to its surroundings.
  b. The system gained 800 J by heat transfer from its surroundings.
  c. The system performed 800 J of work on its surroundings.
  d. The surroundings performed 800 J of work on the system.
  e. The 800 J of work done by the system was equal to the 800 J of heat transferred to the system from its surroundings.

Question 2

In which process will the internal energy of the system NOT change?
 a. An adiabatic expansion of an ideal gas.
  b. An isothermal compression of an ideal gas.
  c. An isobaric expansion of an ideal gas.
  d. The freezing of a quantity of liquid at its melting point.
  e. The evaporation of a quantity of a liquid at its boiling point.

[chereeb]

Answer to Question 1

C

Answer to Question 2

B

[swpotter12]

Gracias!

[dawsa925]

TYSM