# Using the First Law of Thermodynamics to Calculate Work Done

• 1.

If 500 J of heat is added to the system and the internal energy of the system is reduced by 200 J. Calculate the work done by the system.

• 200 J

• 500 J

• 700 J

• 300 J

• 2.

If 500 J of heat is removed from the system and the internal energy of the system is increased by 200 J. Calculate the work done on the system.

• -500 J

• 200 J

• -700 J

• 300 J

• 3.

Calculate the work done by the gas if the internal energy of the gas increases by 300 J when 800 J of heat is supplied to it.

• 300 J

• 500 J

• -500 J

• -300 J

• 4.

Calculate the work done on the gas if the internal energy of the gas increases by 300 J when 800 J of heat is rejected by the gas to the surrounding.

• 1100 J

• -500 J

• 500 J

• -1100 J

• 5.

A system absorbs 100 kJ as heat. Calculate the work done by the system if the internal energy of the system increased by 50 kJ.

• 50 kJ

• -50 kJ

• 150 kJ

• -150 kJ

• 6.

When a gas in a closed container is heated with 50 J of energy, the container's lid rises. How much work was done by the system if the change in energy of the system was 30 J?

• 10 J

• 20 J

• 30 J

• 50 J

• 7.

When 100 J of heat is supplied to a gaseous system, the internal energy of the system increased by 40 J. The work done by the system is

• 100 J

• 60 J

• 40 J

• 50 J

• 8.

A thermal system rejects 50 J of energy to the surrounding. If the internal energy of the system decreases by 70 J, calculate the work done by the system.

• 10 J

• 50 J

• 30 J

• 20 J

• 9.

In a thermodynamic process, a gas receives 200 Joules of heat and its internal energy decreases by 300 J. Calculate the work done by the gas.

• 200 J

• 100 J

• 500 J

• 400 J

• 10.

If the internal energy of a system is increased by 100 J when 200 J of heat is supplied to the system. Calculate the work done by the system.

• 400 J

• 300 J

• 100 J

• 200 J

• 11.

When interacting with the surrounding, a gas loses 200 J of heat. Calculate the work done by the gas if the internal energy of the gas decreased by 400 J.

• 200 J

• 400 J

• 500 J

• 600 J

• 12.

When a system receives 560 J of heat, it loses 360 J of internal energy. Calculate how much work the system has done.

• +920 J

• -260 J

• +300 J

• -920 J

• 13.

A gas loses 400 J of heat as it interacts with its surroundings. Calculate how much work the gas did if its internal energy was reduced by 600 J.

• 300 J

• 400 J

• 100 J

• 200 J

• 14.

In an isothermal process, the change in the internal energy of the system is zero. Calculate the work done by the system if the heat absorbed from the surrounding is 280 J.

• 200 J

• 0 J

• 280 J

• 140 J

• 15.

A container full of gas absorbs 500 J of heat from the heating source. The internal energy of the gas increases by 200 J. Calculate the work done by the gas.

• -300 J

• 200 J

• -200 J

• 300 J

• 16.

A system rejects 200 kJ in the form of heat. Calculate how much work the system does if its internal energy is decreased by 250 kJ.

• 150 kJ

• 450 kJ

• 200 kJ

• 50 kJ

• 17.

When a gaseous system receives 70 J of heat, the internal energy of the system increases by 30 J. Calculate the work done by the system.

• 70 J

• 30 J

• 100 J

• 40 J

• 18.

As a gas interacts with its environment, it loses 500 J of heat. Calculate how much work the gas accomplished after losing 700 J of internal energy.

• 500 J

• 200 J

• 1200 J

• 300 J

• 19.

In the form of heat, a system rejects 180 kJ. Calculate how much work the system accomplishes if it loses 250 kJ of internal energy.

• 70 kJ

• 110 kJ

• 250 kJ

• 180 kJ

• 20.

A gas obtains 100 Joules of heat through a thermodynamic process, and its internal energy is reduced by 300 J. Calculate how much work the gas has done.

• 100 J

• 300 J

• 200 J

• 400 J

• 21.

During the compression process, the internal energy of the gas is increased by 400 J. Calculate the work done by the compressor on the gas if 250 J of heat is supplied to it.

• -150 J

• 650 J

• +150 J

• 250 J

• 22.

The amount of heat rejected by the engine is 260 kJ. Calculate the work done by the gas if the internal energy of the engine decreases by 350 kJ.

• 260 kJ

• 150 kJ

• 350 kJ

• 90 kJ

• 23.

In the form of heat, a system rejects 300 kJ. Calculate how much work the system accomplishes if it loses 350 kJ of internal energy.

• 250 kJ

• 50 kJ

• 200 kJ

• 650 kJ

• 24.

600 J of heat from the heating source is absorbed by a container filled with gas. The gas's internal energy increases by 400 J. Calculate the work done by the gas.

• 400 J

• 600 J

• 300 J

• 200 J

• 25.

The container's lid raises when gas in a closed container is heated with 100 J of energy. If the increase in the system's internal energy change was 30 J, how much work was done by the system?

• 100 J

• 30 J

• 130 J

• 70 J

• 26.

During the compression process, the gas's internal energy is increased by 500 J. Calculate how much work the compressor does on the gas when it receives 350 J of heat.

• +150 J

• -150 J

• -550 J

• +50 J

• 27.

A system absorbs 110 kJ in the form of heat. Calculate how much work the system does if its internal energy is raised by 90 kJ.

• 20 kJ

• 200 kJ

• 90 kJ

• 110 kJ

• 28.

If the system loses 400 J of heat and gains 100 J of internal energy. Calculate the system's work.

• -300 J

• -500 J

• +200 J

• -200 J

• 29.

The internal energy of the gas is raised by 500 J during the compression process. Calculate how much work the compressor does on the gas if 450 J of heat is supplied to it.

• +50 J

• -450 J

• +500 J

• -50 J

• 30.

If the system gains 600 J of heat and gains 100 J of internal energy. Calculate the system's work.