Chemistry, 26.12.2019 11:31 samjohnson2383
In 2005, a nevada silver mine exported 200 tons of silver. in 2008, as the silver supply became exhausted, it only exported 25 tons of silver. what is the rate of change of the mine’s silver output? a. -175/3. b. -1/50. c. 175/3. d. 75
Answers: 3
Chemistry, 22.06.2019 17:00, jazmine8194
Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease
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
Chemistry, 23.06.2019 03:30, uniqueray33
The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?
Answers: 1
In 2005, a nevada silver mine exported 200 tons of silver. in 2008, as the silver supply became exha...
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