Stojan - First Law of Thermodynamics

Heat transferred is completely used for work in the ....

• Isobaric process

• Isothermal process

• Isohoric process

• terrific process

Tags

NGSS.HS-PS3-4

No change in internal energy is observed in.....

• isolated system

• isobaric process

• isothermal process

• isohoric process

The first law of thermodynamics states that the heat transferred to or from the system is equal to the change in the internal energy of a system plus ...

• work done on the system

• work done by the system

• work done by the external forces

• negative work done by the system

On a gas has been noticed a decrease in the volume by 0.2 m3 at a constant pressure of 1 atm during the addition of 12 000 J of heat. The change in the internal energy of the gas is:

• -12 000 J

• 32 000 J

• 8 000 J

• - 18 000 J

80 J of heat is extracted from a gaseous system, whose change in internal energy is 50 J. Then the amount of external work done on the gas is:

• - 130 J

• - 30 J

• 30 J

• 130 J

Tags

NGSS.HS-PS3-1

1000 J of energy were extracted from a gas sample while the gas did 300 J of work on the environment. The change in the internal energy of the gas is:

• 1300 J

• -700 J

• -300 J

• -1300 J

Tags

NGSS.HS-PS3-1

The internal energy change in a system that has absorbed 2000 J of heat and on the gas a work of 500J has been done by the external forces is

• 1500 J

• -1500 J

• 2500 J

• -500 J

Tags

NGSS.HS-PS3-1

Work done by the gas in an isothermal process when the volume decrease is:

• negative

• positive

• zero

• cannot be known

Work done on the gas is equal to negative work done by the gas. True or False?

• True

• False