Answers: 3
Chemistry, 22.06.2019 21:40
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
Chemistry, 23.06.2019 06:00
If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes? or no? this question is worth 20 points! let it be correct!
Answers: 1
Chemistry, 23.06.2019 15:00
The atoms in a have a definite volume, but move quickly enough to overcome the forces of attraction between them. a. solid b.liquid c.gas
Answers: 2
Chemistry, 23.06.2019 19:30
Which of the following is true about science? select one: a. it is not influenced by social conditions. b. it is not determined by external local factors. c. political conditions are unable to influence it. d. economic concerns may prevent it from solving problems.
Answers: 1
What is the answer of (6*10^8) / (3*10^5)^2 ?...
Mathematics, 22.01.2020 13:31
Business, 22.01.2020 13:31
Mathematics, 22.01.2020 13:31
Chemistry, 22.01.2020 13:31
Biology, 22.01.2020 13:31
Mathematics, 22.01.2020 13:31
Mathematics, 22.01.2020 13:31
Chemistry, 22.01.2020 13:31
Social Studies, 22.01.2020 13:31
English, 22.01.2020 13:31