Chemistry, 05.10.2019 12:00 jewelia2801
Classify the chemical equations as being balanced or not balanced. cao + 3c → cac2 + cona + h2o → 2naoh + h24fe + o2 → 2fe2o32mg + o2 → 2mgo
Answers: 2
Chemistry, 21.06.2019 21:50
H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?
Answers: 3
Chemistry, 22.06.2019 17:30
Air can be considered a mixture. which statement does not explain why?
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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
Classify the chemical equations as being balanced or not balanced. cao + 3c → cac2 + cona + h2o → 2n...
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