7. Some students heat a silver bar with a Blowtorch until it reaches a temperature of 250.6 °C. (Just as a random fun fact, the melting point of Silver is 961.8 °C). The silver bar has a mass of 300.05 grams. If they add the gold
bar to 342.6 grams of water in a calorimeter), and the temperature of the water/metal combo rises to 63.5 °C.
How many Joules of Heat Energy did the silver bar release as it cooled? Assuming that the water absorbed that
same amount of Energy, what must the initial temperature of the water been? Use the Specific Heat Capacities
in the Table below to solve.
Specific Heat Capacities
OPE

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.