Question 1 Part A
? Question
Drag one of the white atoms to a different part of the screen. Which statement describes what happens?
The two white atoms repel one another and move back to opposite ends.
The two white atoms join in a new covalent bond, making a new molecule.
The bond angle changes from 180.0 degrees to 90.0 degrees permanently.
The second white atom moves so that it is no longer a part of the molecule.
Show My Answer
Try Again

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.