Histidine has ionizable groups with pKa values of 1.8, 6.0 and 9.2. (These correspond to the COOH, imidazole, and –NH3 groups respectively). You have 100 mL of a 0.1 M solution of histidine at pH 5.40. You then add 40 mL of 0.1 N HCl. What is the resulting pH of the solution?

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

that tool would be a compass

2b2t

explanation:

2b2t