A volumetric flask made of pyrex is calibrated at. It is filled to the 1000-ml mark with 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. The combination is then cooled back to. (a) determine the volume of the acetone when it cools to ? (b) at the temperature of , does the level of acetone lie above or below the 1000-ml mark on the flask?.