Anuclide of 64/29 cu absorbs a positron. witch is the resulting atom? (a) 65/29cu (b) 63/29 cu (c) 64/28ni (d) 64/30 zn

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

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.