Chemistry, 30.11.2019 05:31, castor1358
A2.85-g sample of an unknown chlorofluorocarbon is decomposed and produces 564 ml of chlorine gas (cl2) at a pressure of 752 mmhg and a temperature of 298 k. what is the percent chlorine (by mass) in the unknown chlorofluorocarbon
Answers: 1
Chemistry, 22.06.2019 13:30, kassandrarosario1115
How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123
Answers: 1
Chemistry, 22.06.2019 21:40, k3rbycalilung
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.
Answers: 2
A2.85-g sample of an unknown chlorofluorocarbon is decomposed and produces 564 ml of chlorine gas (c...