Consider ch3cl. average mw = 50.484 g/mole. in the ms spectrum, we expect two peaks for ch3cl+, at m/z values of 50 (m+) and 52 (m++2) da. dalton (da) is a unit that is used for indicating mass on an atomic or molecular scale. predict the relative intensity of the m+ and (m++2) peaks for ch3cl, and sketch that part of the mass spectrum with the height of the peaks drawn to scale. label each axis

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.