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A 0.050 M H2S solution contains 0.20 M NiCl2 and 0.35 M Hg(NO3)2. What pH is required to precipitate the maximum amount of HgS but none of the NiS?
Calcuate the molalities of MgSO4, Mg2+, and SO4 in a 0.05000m solution of MgSO4 at 25 degree and at 250 degree. Find the appropriate log K's in Soltherm
Many important drugs contain the amine functional group, which makes them basic. Many drugs also contain an amide group, which is effectively neutral. Suggest a way to separate ephedrine, a stimulant and decongestant drug shown below
Suppose you were asked to carry out an aldol condensation reaction between benzaldehyde and 5-methylhexanal, modeled after the experiment you performed with benzaldehyde and acetone.
Create a procedure of not more than 5 steps that you think will work to compare the efficiency of the light emitted by an incandescent light bulb to that emitted by a fluorescent light bulb. Make sure to mention all the variables you think you'll ..
Bromine is extracted from brine wells. The process involves treating water containing bromine ion with chlorine gas and extracting the Br2 from the solution using an organic solvent. Write a net ionic balanced equation for the reaction of chlorine..
When 12.0 mL of a 2.89E-4 M barium acetate solution is combined with 18.0 mL of a 5.24E-4 M sodium carbonate solution does a precipitate form
Calculate the molarity of a solution made by adding 23.9 mL of concentrated potassium hydroxide (34.5 % by mass, density 1.46 g/mL) to some water in a volumetric flask
Consider a solution that contains 72.0% R isomer and 28.0% S isomer. If the observed specific rotation of the mixture is -41.0°, what is the specific rotation of the pure R isomer
What is the minimum external voltage one must supply in order to perform the electrolysis of molten CaCl2. Show work, explain, and suggest a means for supplying this energy.
A 1.000 L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 1.00 x 103 torr. It is filled with helium at 19.5 °C and 0.924 atm and then placed in boiling water at exactly 100°C. What is the pressure in atm in the..
How many moles contain each of the following?
The enthalpy of vaporization of water at 373 K and 1 bar is 40.7 kJ/mol and the molar heat capacities are 75.3 J/(mol K) for liquid and 33.6 J/(mol K) for gaseous water. Find the enthalpy of vaporization of water at 273 K and 1 bar.
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