The compound "x" has a solubility of 4.24 g/100 ml in ethyl alcohol at 78 oc and of 0.86 g/100 ml at 0 oc. answer the following using this data:

find the volume of ethyl alcohol required to dissolve 50 mg of the compound "x".

calculate the maximum percent recovery that could be obtained.

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.