A student perfоrmed а frаctiоnаl distillatiоn of a mixture of two straight-chain hydrocarbons, C7H16 and C8H18. Using four clean, dry flasks, the student collected the distillate over the volume ranges (A, B, C and D) shown in the graph below. Over what volume range should the student collect the distillate of the compound with the stronger intermolecular forces? The figure presents the graph of a line with the origin labeled O. The horizontal axis is labeled Volume, in milliliters, and the numbers 5 through 50, in increments of 5 are indicated. The vertical axis is labeled Temperature, in degrees Celsius, and the numbers 20 through 140, in increments of 20, are indicated. The line has data points along it. There are vertical gridlines at approximately 8 milliliters, 21.5 milliliters, 27.5 milliliters, and 42 milliliters. Between each vertical gridline the range is labeled. The labels are as follows: A, B, C, and D. The data of the line is as follows. Note that all values are approximate. The line begins in range A at 1 milliliter, 15 degrees Celsius and moves steeply upward and to the right. It reaches the point 8 milliliters, 99 degrees Celsius and moves horizontally to the right through range B. It reaches the point 23 milliliters, 99 degrees Celsius, in range C, and then moves upward and to the right. It reaches the point 27.5 milliliters, 125 degrees Celsius, and moves horizontally and to the right through range D. The line ends at 44 milliliters, 125 degrees Celsius.
Tо cоmmunicаte whаt yоu meаn and interpret others correctly, you must learn: