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The student determined that the average concentration of HCl was 0.188 M. What volume of 0.0875 M NaOH would be needed to comletely react with 15.0 mL of this acid? Give the numerical answer (regular number not scientific notation) and do not use units. Report the answer in milliliters
What mass of solid potassium nitrite would need to be dissolved in 500. mL of 0.40 M HNO2 to make 500. mL of a NO2?/HNO2 buffer solution that has a pH = 3.25? Ka of HNO2 = 7.1 x 10?4
Determine the amino acid sequence of a heptapeptide from the following data. Briefly explain the meaning of the results in each of the following treatments.
In what order would the amino acids arginine, leucine, and lysine be eluted from a Dowex-1 column at pH 10.5? (b) In what order would glutamic acid
C6H12 + 9O2 ----> 6CO2 + 6 H2O 42 grams of cyclohexane burns in excess air to from carbon dioxide and water. How many grams of carbon dioxide and of water vapor are produced
A silver block, initially at 56.8 degrees C, is submerged into 100.0g of water at 24.7 degree C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 27.8 degrees C
Provide some diagnostically useful differences you would expect in the IR spectra between starting materials and product for the reaction you carried out (e.g. if I was asked this regarding the oxidation of cyclohexanol to cyclohexanone
An isolated tube contains 1 mole of argon at 5atm on one side of a movable barrier held in place by a pin. On the other side of the barrier is 0.2 mole of neon at 0.5atm, the the whole system is at 298K.
A solution is prepared by dissolving 12.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 12.50 mL sample of this stock solution is added to 55.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
calculate the massvolume percent of a solution in which 168 of is dissolved in enough water to give a total volume of
If 37.3 g of CO2 is produced in the reaction of C2H2 with O2 to form CO2 and H2O, how many grams of H2O are produced in this reaction.
Calculate the freezing point of a solution of 23.4 grams of benzoic acid (C6H5CO2H) dissolved in 613 grams
Calculate the molarity and mole fraction of acetone in a 1.25 m solution of acetone (CH3COCH3) in ethanol (C2H5OH). (Density of acetone = 0.788 g/cm3; density of ethanol = 0.789 g/cm3.) Assume that the volumes of acetone and ethanol add. molarity ..
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