Chemistry, 10.07.2019 17:30 EllaLovesAnime
Acompound is found to contain 15.94 % boron and 84.06 % fluorine by mass. to answer the question, enter the elements in the order presented above. question 1: the empirical formula for this compound is . question 2: the molar mass for this compound is 67.81 g/mol. the molecular formula for this compound is .
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The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?
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Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule
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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
Acompound is found to contain 15.94 % boron and 84.06 % fluorine by mass. to answer the question, en...
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