Plz answer! In a chemistry lab, you fill a container with barium metal and sulfur gas. Once the container is sealed, tests indicate that a new chemical substance has been formed. In one paragraph, using your own words, describe what type of bond is formed, and for what purpose did each atom enter into the chemical bond? Be sure to use proper spelling, grammar, and punctuation.

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.