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A solution (100 mL) containing the diprotic weak acid, leucine (amino acid), at a concentration of 0.0005 M was titrated with 0.005 M NaOH (strong base). Calculate the pH at the following points (volumes of NaOH added) along the titration curve for leucine. Also, sketch the titration curve for this concentration and volume of leucine with NaOH. a. 0 mL of NaOH added b. 5 mL of NaOH added c. 10 mL of NaOH added d. 15 mL of NaOH added e. 20 mL of NaOH added f. 25 mL of NaOH added Ka1= 4.69 x 10^-3 Ka2= 1.79 x 10^-10
Put the following substances in correct order of increasing boiling point: Ar, F2, H3COH, Ir, SO2.
Liquid butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 30.4 g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas? The heat of vaporization of butane is 21.3 kJ/mol.
In the actual O3 molecule the best description of the number of bonds between O-O atoms is____ bonds.
what is the mass in grams of a single atom of Ru. The answer is supposed to be in scientific notation as in blank time ten^ blank. I kinda have an idea but not sure
Determine the delta H of decomposition of 1.000 mole of solid KCIO3 into solid KCI and gaseous oxygen.
Calculate the pH at the equivalence point for the titration of 0.25 M CH3COOH with 0.25 M NaOH. (For CH3COOH, Ka= 1.8 × 10^-5)
What is the maximum strength of acetic acid waste ( as TOC in mg/L) that can be discharged without violating either permit requirement. ( recall that TOC in mg/L , measures the number of miligrams of carbon per liter)
upon catalytic hydrogenation unknown Z gives cyclooctane. Oxonolysis of Z followed by reduction with dimethyl sulfide, gives a three0carbon dialdehyde and a five-carbon dialdehyde. Draw the stucture of Z.
the air in the laboratory was measured with a barometer to be 7.20 x 10 squared mm Hg. what is the laboratory air pressure in atm.
A biochemical engineer isolates a bacterial gene fragment and dissolves a 10mg sample in enough water to make 30ml of solution. the osmotic pressure of the solution is .340 torr at 25 degrees C. the molar mass of the gene fragment is 1.81x10^4 g/m..
osmium has a density of 22.6 g/cm3. what volume (in mL) would be occupied by a 21.8 g sample of osmium?
Using a flow diagram, show the separation of a mixture containing p-bromoacetanilide, N-cyclopentyl-N-methyl-N-propylamine (N means the group is attached to the nitrogen of the amine) and m-nitrophenol. Specify the organic solvent and aqueous
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