A certain metal has a coefficient of linear expansion of 2.00 10-5 K-1. It has been kept in a laboratory oven at 325C for a long time. It is now removed from the oven and placed in a freezer at -145C.
After it has reached freezer temperature, the percent change in its density during this process is closest to
A) +2.90.
B) -2.90.
C) +2.74.
D) -2.74.
E) It is not possible to tell without knowing the mass and original volume of the metal.
Question 2
The coefficient of volume expansion of olive oil is 0.68 10-3 K-1. A 1.00-L glass beaker is filled to the brim with olive oil at room temperature.
The beaker is placed on a range and the temperature of the oil and beaker increases by 25C. As a result, 0.0167 L of olive oil spill over the top of the beaker. What is the coefficient of linear expansion of the glass?
A) 1.0 10-6 K-1
B) 4.0 10-6 K-1
C) 1.0 10-5 K-1
D) 2.0 10-5 K-1
E) 3.0 10-5 K-1
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