Serway & Jewett — Temperature: Problem 15

A volumetric flask made of Pyrex is calibrated at $20.0^\circ\text{C}$. It is filled to the 100-mL mark with $35.0^\circ\text{C}$ acetone. After the flask is filled, the acetone cools and the flask warms so that the combination of acetone and flask reaches a uniform temperature of $32.0^\circ\text{C}$. The combination is then cooled back to $20.0^\circ\text{C}$. (a) What is the volume of the acetone when it cools to $20.0^\circ\text{C}$? (b) At the temperature of $32.0^\circ\text{C}$, does the level of acetone lie above or below the 100-mL mark on the flask? Explain.