A car was traveling north on straight road on at 50 kilometers per hour. It slowed to 20 kilometers per hour 30 meters before a stop sign. At the stop sign, the car fully stopped. As the car traveled toward the stop sign it’s -answer

The minerals found in bones are deposited by living cells called

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

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.