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A 36-mg sample of an organic compound (MW=84) is dissolved in 10mLof water. This aqueous solution is extracted with 5.0mL of hexane. Separation as well as analysis of the aqueous phase shows that it now contains 12mg of the organic compound. Compute the partition coefficient for the compound.
determine what volume of .1 m hbr is required to neutralize 50 ml of .140 m barium hydroxide?considering the given
What is the [OH-] of 109.7 mL of a buffer initially consisting of .1572 M C2H5NH2 and .0904 M after the addition of .0030 moles of HCl. Kb of C2H5NH2 = 5.6e-4
You have available at your lab bench a 0.1 M solution of TRIS in its protonated form, 0.1 M solutions of HCL and NaOH, and ample distilled water. Describe the preparation of a 1 L solution of 0.2 M TRIS buffer, pH 7.8
A 2.42-L flask is filled with propane gas (C3H8), at 1.00 atm and -13.0°C. What is the mass of the propane in the flask.
-How can you tell which substance receives the H+ or not? and which one is neutral?
What are bonding theories? Why are they important? What may they be used for. HI has a force contents of 314 Nm^-1 and a bond length of 160.92 pm.
A urine sample contains 46.5mgL-1 of ethanol. The density of ethanol is 0.79gcm-3. What is the concentration expressed as %v/v
In order to produce 10000.0 kJ of energy, how many grams of oxygen must react?
write a detailed mechanism for the reaction of salicylic acid with acetic anhydride showing clearly the function of the catalyst,
How many milliliters of a solution that is 10.53% H3PO4 (w/w) with a density of 1.1928 g/mL should be diluted in order to make 4.50 L of a 0.100 M H3PO4 solution
A sample of solid aluminum with a mass of 1.75 Kg is cooled at constant pressure from 300 to 265 K. Calculate the entropy change. Cp,m = 24.35 J/(K mol).
A tank contains a mixture of 3.0 mol N2, 2.0 mol O2, and 1.0 mol CO2 at 25 degree Celcius and a total pressure at 10.0 atm. Calculate the partial pressure(in torr) of each gas in the mixture.
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