First Law of Thermodynamics

A process during which the temperature of a sample of gas doesn't change is called a​ (a)   process

• isothermal
• isobaric
• isochoric
• adaibatic

Consider the pV diagram shown. Consider the magnitude of work done on the gas during each process AB, BC, CD and DA. Reorder the magnitude of work done from least to greatest.

• C to D

• A to B

• D to A

• B to C

Tags

NGSS.HS-PS3-2

The pV diagram shows an ideal gas undergoing a cyclic process - A to C to D to B to A. Choose the point that shows the gas at the highest temperature.

• A

• B

• C

• D

Tags

NGSS.HS-PS3-1

The pV diagram shows an ideal gas undergoing a cyclic process - A to C to D to B to A. What is the correct magnitude and sign of the work done on the gas during the section B to A?

• 600 J

• 400 J

• - 600 J

• - 400 J

• B to A

• A to C

• C to D

• D to B

Tags

NGSS.HS-PS3-4

• +
• 0
• -

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

For the entire cyclic process A to B to C to A, which of the following is true of the quantity Q?

• Q > 0

• Q < 0

• Q can not be determined from the pV diagram

• Q = 0

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

• The average kinetic energy of the gas

• The temperature of the gas at the end of the process

• The thermal energy transferred to the gas by heating

• The work done on the gas

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

An ideal gas is taken from state 1 to state 2 and then to state 3. If the process 1-2 is adiabatic and 2-3 is isothermal, what is a true statement

about the change in temperature and heat transferred during 1-2?

• ΔT > 0, Q > 0

• ΔT < 0, Q = 0

• ΔT = 0, Q = 0

• ΔT = 0, Q < 0

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

During a thermodynamic process, 2,000 J of heat are removed from a gas while 600 J of work is done by the gas. What is the change in internal energy of the gas?

• +2,600 J

• 0

• - 1400 J

• - 2600 J