1st Law of Thermodynamics Quiz

A container of gas expands. Is the work done by the surroundings positive or negative?
1. Positive
2. Negative
1000 J of thermal energy is added to gas. The internal energy of the gas increases by 3000 J. How much work was done by the surroundings?
1. 2000 J
2. 4000 J
3. -2000 J
4000 J of energy is removed from 10 moles of a gas. The gas does 1000 J of work as the gas's container expands. What is the internal energy of the gas?
1. +5000 J
2. -3000 J
3. -5000 J
A bottle of perfume is placed on the roof of a very cold car in the winter. The bottle is not a thermal insulator. To examine what is happening to the bottle's gas, is the "Q" in the 1st law of thermodynamics equation positive or negative?
1. Negative
2. Positive
1000 J of thermal energy is added to gas. The internal energy of the gas increases by 3000 J. How much work was done by the gas.
1. 2000 J
2. 4000 J
3. -2000 J
5000 J of energy escapes a container of gas. The internal energy of the gas increases by 3000, did the continer holding the gas expand, shrink or stay the same size?
1. The container holding the gas became smaller.
2. The container holding the gas became larger.
3. The container holding the gas did not change size.
A container of gas does not change its size as 3000 J of thermal energy is added. What is the change in internal energy of the gas?
1. Greater than 3000 J
2. Less than 3000 J
3. 3000 J
4. Are you kiddin'? Nobody can figure this out!