Determine the change in length of a 20-m railroad track made of steel if the temperature is changed from 15C to +35C. (STEEL = 1.1 105/C)
[Ques. 2] A gold ring has an inner diameter of 2.168 cm at a temperature of 15.0C. Determine its diameter at 100.0C. (GOLD = 1.42 105/C)
[Ques. 3] At which of the following temperatures would one liter of water weigh the most?
a. 2C
b. 4C
c. 8C
d. 90C
e. It would weigh the same at all these temperatures.
[Ques. 4] A constant-volume gas thermometer has a pressure of 2.00 atm at 100C. What would its pressure be at 0C?
a. 0.732 atm
b. 1.46 atm
c. 1.24 atm
d. 1.37 atm
e. More information is needed to find the answer.
[Ques. 5] The mass of a sulfur atom is 32.0 u, and the mass of a fluorine atom is 19.0 u. What is the mass of a mole of sulfur hexafluoride (SF6)?
a. 41.0 g
b. 20.5 g
c. 106 g
d. 146 g
e. 211 g
[Ques. 6] 48 grams of oxygen at room temperature consists of how many moles?
a. 3.0
b. 1.5
c. 0.75
d. more than 3.0
e. less than 0.75
[Ques. 7] A square plate has an area of 29.00 cm2 at 20.0C. It will be used in a low temperature experiment at T = 10.0K where it must have an area of 28.00 cm2 . What area must be removed from the plate at 20.0C for it to have the correct area at 10.0 K? (The coefficient of linear expansion is 10 106 (C)1.)
a. 0.079 3 cm2
b. 0.159 cm2
c. 0.238 cm2
d. 0.836 cm2
e. 0.921 cm2
[Ques. 8] Two moles of an ideal gas are placed in a container of adjustable volume. When measurements are made
a. the pressure is inversely proportional to the volume at constant temperature.
b. the temperature is directly proportional to the volume at constant pressure.
c. the temperature is directly proportional to the pressure at constant volume.
d. all the statements above are found to be correct.
e. only statements (a) and (b) are found to be correct.
[Ques. 9] Angela claims that she wears a cylindrical-shaped hollow gold bracelet because it expands less than a solid one with a change in temperature. Clarissa claims that a cylindrical-shaped solid gold bracelet expands less than a hollow one. Which one, if either, is correct?
a. Angela, because the bracelet expands outward on its outer surface and inward on its inner surface.
b. Clarissa, because the bracelet expands outward on its outer surface and inward on its inner surface.
c. Angela, because the inner circumference does not change, but the outer circumference expands.
d. Clarissa, because the inner circumference does not change, but the outer circumference expands.
e. Neither, because both the inner and outer circumferences increase in length.
[Ques. 10] Two bodies can be in thermal equilibrium with one another when they are at the same temperature even if they
a. absorb different quantities of thermal energy from their surroundings in equal time intervals.
b. have different masses.
c. have different volumes.
d. have any of the properties listed above.
e. have any of the properties listed above and one of them is contact with a third body at a different temperature.
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