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Chemistry, 21.06.2019 14:30
Alculate the concentration of h3oβΊin a solution that contains 5.5 Γ 10-5m ohβ»at 25Β°c. identify the solution as acidic, basic, or neutral.a) 1.8 Γ 10-10m, basicb) 1.8 Γ 10-10m, acidicc) 5.5 Γ 10-10m, neutrald) 9.2 Γ 10-1m, acidice) 9.2 Γ 10-1m, basic
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Chemistry, 22.06.2019 16:40
The diagram below shows the movement of particles. what does this piece of evidence best support? the collision theory the maxwell-boltzmann distribution the effect of pressure on reaction rates the effect of temperature on reaction rates
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, 22.06.2019 22:10
Determine the ph of 0.10 m nh3 solution. nh3 is a weak base with a kb equal to 1.8 x 10-5 round answer to nearest whole number.
Answers: 1
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