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At what pH is the weak base, pyridine, dissociated by 5%? Pyridine + H2O <---> Pyridium cation + OH- Kb = 1.71*10 ^-9 A. pH = 5.5 B. pH = 6.5 C. pH = 7.5 D. pH = 8.8 E. pH = 10.1
the heat energy required to melt 1.00 g of ice at 0degc is 333 j. if one ice cube has a mass of 62.0 g and a tray
Based on the procedure that you used in this experiment and using the same molar quantaties of reactants, develop a procedure that would be suitable for the preparation of isobutyl propionate.
How many milliliters of a stock solution of 11.0 NHO3 would you have to use to prepare 0.320 of 0.350 NHO3
At what pH must solutions of nickel (II) ions be maintained in order to prevent precipitation of the hydroxide
draw the structure of p-aminobenzoic, and show all importnant resonance structures for this molecule
Which of these elements occupies a position on the periodic table that is not entirely consistent with its chemical properties
the solubility of carbon dioxide in h2o at the temperature of twenty five degree celsius and pressure of co2 1 atm
The good professor accidently grabs the Na2HPO4 bottle. What pH did professor Whoops expect the solution to be. what was the actual pH of the solution as made
Why are monochromators (prism or grating monochromators) used in scanning instruments as opposed to absorption filters
A 1.733 g sample of a metal reacts with hydrochloric acid to form a MCl2 type of salt and 380.0 mL of H2 at 20 degrees C and 720 torr pressure. a) Write a balanced net ionic equation for this reaction b) Determine identity of the metal.
a gaseous sample of a compound has a gas density of 0.977 gl at 710.0 torr and 100.0 c. what is the molar mass the
What is the hydroniem ion concentration in a solution resulting from mixing 193mL of .100M HCN and 22mL of .100M KOH at 25C? Ka for HCN=4.9x10-10
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