Step 2: Prepare Aqueous Copper (II) Chloride (Trial 1)
0.10g
3.05 ZERO
0.019
+
Target Weight: 2.50g CuCl2
Using a spatula and a balance, measure 2.50 g copper(II) chloride (CuCl2). You may need to add
and subtract to get exactly 2.50 g.
5) Intro
An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it
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.