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A certain dry mixture contains only three compounds- silver nitrate, magnesium chloride, and barium nitrate. When 1.253 g of the mixture was added to excess water, 0.114 g of dry precipitate was recovered by filteration. The solution which passed through the filter was collected in a beaker and excess sodium sulfate solution was added to this beaker. 0.432 g of fry precipitate was collected from this second solution by filtration. Calculate the percent of magnesium chloride in the original mixture.
Draw all possible stereoisomers for each of the following compounds. If no stereoisomers are possible, only draw one structure. (All hydrogen atoms are implied. If a chiral carbon atom is attached to a hydrogen atom, you should not show the hydrog..
with a solution in them connected by a liquid salt bridge junction filled with KNO3. In one solution you have a graphite electrode that is connected with a wire to a copper electrode in the second soution. The soution in contact with the graphite ..
Use the ideal gas law to calculate the concentrations of nitrogen and oxygen present in air at a pressure of 1.0 and a temperature of 298 .
Calculate the percentage of pyridine ( C5H5N) that forms pyridinium ion, C5H5NH+ , in a 0.10 M aqueous solution of pyridine (Kb = 1.7x10-9).
There is no need to show a retrosynthesis or the mechanism of any step, only the necessary reagents and the resulting intermediate product(s) for each step of the synthesis.
Why is the Beer - Lambert law in units of absorbance rather than in units percent transmittance
When potassium carbonate is added to the remaining solution, a precipitate occurs. Which ions were present in the original solution? Write net ionic equations for the formation of each of the precipitates observed.
A mixture of 0.10 mol of NO(g), 0.05 mol of H2(g), and 0.10 mol of H2O(g) is placed in a 1.0-L vessel at 300K?
A sample of a fluorocarbon gas was allowed to expand to twice its volume. In this reversible, adiabatic expansion, the temperature dropped from 298.15K to 248.44K. assuming the gas acts ideally during the expansion, estimate Cv for one mole
Calculate the number of grams of carbon monoxide produced from the detonation of 200.0g of TNT (C7H5N3O6) given the following reaction
A sample of chlorine has two naturally occuring isotopes, the isotope Cl-35 makes up 75.8% of the sample, and the isotope cl-37 makes up 24.3 of the sample. Which of the following statements is true
He decides to run an FTIR on the resultant powder on the cold finger apparatus. WHat functional group would clearly cofiirm that the white powder is indeed caffeine and not catechin?
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