Asolid is placed in a solution. which observation most likely indicates that a chemical reaction has occurred?
a) the size of the solid has rapidly decreased.
b) the color of the solution has not changed.
c) the solid has bubbles forming on its surface.
d) the temperature of the solution stays the same.

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.

What mass of glucose is produced when 54g of water react with carbon dioxide

Atriple covalent bond involves two atoms sharing three pairs of electrons. true false