Amino acids placed on a cation exchange resin containing sulfonate (-SO3-) groups flow down the column at different rates because of two factors that influence their movement: (1) ionic interactions between the sulfonate residues on the column and positively charged functional groups on the amino acids, and (2) hydrophobic interactions between amino acid side chains and the strongly hydrophobic backbone of the polystyrene resin. For each pair of amino acids listed, determine which will be eluted first from the cation exchange column by a pH 7 buffer.

hey there!

boiling point is the temperature at which the vapor pressure of the liquid equals atmospheric pressure. the vapor pressure of solvent molecules is decreased when a solute is added, so a higher temperature is required to increase the number of solvent molecules in the gas phase above the liquid.

at the freezing point, the vapor pressures of the solid and liquid are equal; a lower temperature is needed to reduce the number of solvent particles above the liquid.

hope this you

tobey

i'm assuming that the correct answer is indeed the first one/ "a"..

it means there are 3 atoms of oxygen