You begin pouring sodium chloride into a glass of water. for a long time, the sodium chloride just dissolves in the water, but suddenly it begins to pile up at the bottom of the glass. which statement is true? select one: a. the water is unsaturated. b. the sodium chloride has increased the temperature of the water. c. the water is saturated. d. the sodium chloride has decreased the temperature of the water.

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.