A gas maintains constant temperature, but experiences both a change in its pressure and in its volume. What happens to its internal energy?
1.The internal energy decreases.
2.The internal energy increases.
3.The internal energy remains constant.
4.It cannot be determined whether it will increase, decrease, or remain the same.
[Ques. 2] Let's say that a gas decreases in temperature, but that its volume remains constant during this process. What happens to its internal energy in this case?
1.The internal energy decreases.
2.The internal energy increases.
3.The internal energy remains constant.
4.It cannot be determined whether it will increase, decrease, or remain the same.
[Ques. 3] If the average translational kinetic energy of the molecules in one sample of gas has twice the value of that of another sample of the same type of gas, what is the ratio of the rms speeds of the molecules in the first gas to those in the second?
1.4.0
2.2.0
3.1.41
4.0.71
[Ques. 4] If the average translational kinetic energy of the molecules of one sample of gas has twice the value of that of another sample of gas, how do the internal energies of the two gases compare?
1.The internal energy of the first gas is greater.
2.The internal energy of the second gas is greater.
3.The internal energies of both gases are the same.
4.We cannot determine which gas has the greater internal energy.
[Ques. 5] If the average translational kinetic energy of the molecules in one sample of gas has twice the value of that of another sample of gas and the temperature of the first sample of gas is 100C, what is the temperature of the second sample of gas?
1.100C
2.50C
3.0C
4.-86.6C
[Ques. 6] A sample of gas expands. Which of the following would not account for this?
1.The pressure on the gas increased.
2.The temperature of the gas increased.
3.The pressure on the gas decreased.
4.All of these could account for this.
[Ques. 7] If a meter stick is metallic and is used for measuring lengths at room temperature, what will be the effect of using the same meter stick for measuring lengths outside on a snowy day?
1.There will be no effect. The lengths measured outside would be the same as those measured inside.
2.The lengths measured outside would be slightly less than those measured inside.
3.The lengths measured outside would be slightly greater than those measured inside.
4.It is impossible to tell. It depends on what type of metal the meter stick is composed of.
[Ques. 8] Let's say that you have one mole of hydrogen gas, one mole of helium gas, and one mole of oxygen gas. Which of these quantities of gas has the greater mass?
1.The hydrogen gas.
2.The helium gas.
3.The oxygen gas.
4.They all have the same mass.
[Ques. 9] Two identical cylinders at the same pressure contain the same kind of gas and the same number of moles of gas (in other words, the same amount of gas). If one has two times the volume of the other, what can you say about the relative temperatures of the gas within each of the cylinders?
1.The temperature must be the same.
2.The cylinder with the larger volume must have a temperature on an absolute scale that is the temperature of the other.
3.The cylinder with the smaller volume must have a temperature on an absolute scale that is the temperature of the other.
4.It is impossible to tell because the temperatures could be anything.
[Ques. 10] Consider an amount of water freshly melted from snow in a pan and that the water has a temperature of 1C. What will happen to the water as its temperature is increased to 3C?
1.It will expand slightly (its volume will increase).
2.It will contract slightly (its volume will decrease).
3.Its volume will not change.
4.Its mass will decrease.
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