AP BIOLOGY

Detailed explanation-1: -If a substance such as sugar is dissolved in water, the density of the resulting solution is greater than the density of water. The density of such solutions varies di-rectly with the concentration of the solutions. Thus the higher the percentage of sugar in the solutions, the greater the density of the solutions.

Detailed explanation-2: -The ratio of the areas under the two peaks (Table 1) shows that at increasing sugar concentration there is an increase in the water component absorbing at longer wavelength, i.e., the component corresponding to the water molecules engaged in 1 H-bond.

Detailed explanation-3: -Solutions with a high concentration of solute molecules, such as sugars or salts, have a low concentration of water molecules and vice versa.

Detailed explanation-4: -Answer. A SUGAR SOLUTION IS MORE CONC. BECAUSE THE SOLUTE IS MORE WHICH MAKES IT CONC.