A Certain Metal Has a Coefficient of Linear Expansion of 2.00

question 8

Multiple Choice

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 325°C for a long time. It is now removed from the oven and placed in a freezer at -145°C. 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.

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