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1)Determine the following characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) Enter scientific notation as 1.23E4. (a) The initial pH : Enter only numbers in your answer. (b) The volume of HI(aq) required to reach the equivalence point : (c) The pH at the half-neutralization point. Enter only numbers in your answer. (d) The pH at the equivalence point.
Calculate the vapor pressure of water, in torr, above a solution prepared by dissolving 65.40 g of ZnCl2 in 445.0 g of water at 323.0 K. The vapor pressure of pure water at 323.0 K is 92.50 torr.
Calculate the theoretical yield of when 114 g of C2H6 reacts with 206g of Cl2 , assuming that and react only to form and .
Calculate the final temperature when a 16.4 gram sample of ice at 0oC is placed into a styrofoam cup containing 126 grams of water at 72.7 oC. Assume that there is no loss or gain of heat from the surroundings.
A 1.50 mole sample of an ideal gas at 28.5 degrees C expands isothermally from an initial volume of 22.5dm^3 to a final volume of 75.5dm^3
calculate the radius of a chloride ion. find values reported for the ionic radii or sodium and chlorine in a refernce book, and compare them with the values you determined. is the differnece significant?
What would be the result of a column chromatographic separation if the column chromatography was to be performed in the following eluents:
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 8.00 g of sodium carbonate is mixed with one containing 4.75 g of silver nitrate.
show the calculation of calculating the volume of 6M NaOH required to react compeletly with 2.00mmol of methyl salicylate
Match the detector or detectors that can be used in gas chromatography for the detection of the following list of analytes. (More than one detector may be appropriate for a given analyte, and a given detector may be appropriate for more than one g..
the density of the solution is 1.41 g/mL at 25 degrees celcius. What is the molarity of nitric acid in this solution?
Write the systematic (IUPAC, or CA) names for the amines shown below. The names should have the format alkanamine.
HbS has normal shape under normal conditions, but under conditions of low [O2] the hemoglobin forms fibrous aggregations, giving the entire red blood cell a sickle shape. (See image of eight HbS molecules at right.)
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