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Which of the following solvents would be the best choice to extract a slightly-polar organic compound from an aqueous solution? Explain why each of other solvents is less desirable than the solvent you have chosen. Acetonitrile, dimethylformamide, hexane, methylene chloride are our solvent choices.
You are given a sample containing three organic compounds: a hydrocarbon, carboxylic acid, and an amine. All of these compounds are very soluble in ether and insoluble in water. Using a flow chart, show how you could separate the components of this mixture using extraction.
Obtain from a reference work the solubility of silver acetate at 20 degree C. Usually this will be reported in units of grams per 100 mL of water
Calculate the mass of KI in grams required to prepare 4.00 102 mL of a 2.80 M solution.
A chemist dissolves 284 mg of pure potassium hydroxide in enough water to make up 140 mL of solution. Calculate the pH of the solution.
If the barometric pressure is 741 mmHg, and if h = 53. 0 mm, what is the pressure of the gas, expressed in atm and in kilopascals, if the substance in the tube is mercury having a density of 13.6 g/mL.
10 g of methane (CH4) is combusted in a calorimeter that has an empty heat capacity of 18 J/°C. The calorimeter contained 150 g of water.
In the standardization of NaOH, 38.76 mL of NaOH was required for 0.8169 g potassium acid phthalate. Estimate the accuracy we should expect in the molarity of the NaOH solution assuming the weighing error is ±0.1 mg
Brass has a specific heat capacity of 0.393 Joules/g C. A paperweight weighing 129g is heated to 95.0 C. Then it is added to 44.6g of water in a calorimeter having a temperature
If 1.02 g KHP (molar mass = 204.2 g/mol) is titrated with 28.34 mL of NaOH, what is the concentration of NaOH?
calculate the volume, in liters, occupied by 3.25 moles of Cl2 gas at 1.54 atm pressure and a temperature of 213 degrees celcius?
What was your melting point of your impure and recrystallized acetanilide? What does this tell you about the sucess of your purification?
what is the animals initial radiation exposure in curies? b) if all of the energy from the emitted alpha particles is absorbed by the animals tissues, and if the energy of each emission
A room temperature aqueous solution is 0.10 M in zinc acetate, 0.50 M in strontium acetate and 15.2 M in nickel (II) acetate. At what concentration of carbonate
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