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Chemistry, 21.06.2019 23:00
Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.
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Chemistry, 22.06.2019 04:30
In which phase(s) do the molecules take the shape of the container?
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Chemistry, 22.06.2019 07:30
According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons
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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
What is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen?...
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