How do hydrogen bonds compare with other intermolecular forces?

A. Hydrogen bonds are stronger than dipole-dipole and Van der

Waals forces.

B. Hydrogen bonds are weaker than dipole-dipole and Van der Waals

forces.

C. Hydrogen bonds are stronger than dipole-dipole forces but weaker

than Van der Waals forces.

D. Hydrogen bonds are weaker than dipole-dipole forces but stronger

than Van der Waals forces.

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.