Chemistry, 21.07.2019 22:30, srsnider2017

What is the most likely explanation for the change in population that occurred at 1.5 years?

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Chemistry, 22.06.2019 08:30, kdog1738

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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.

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Chemistry, 23.06.2019 03:50, mobslayer88

How many moles of potassium are needed to react completely with 12.8 moles of magnessium bromide?

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Chemistry, 23.06.2019 07:00, jstyopin

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)