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Write a balanced hydrolysis equation to show why solutions of aluminum chloride are acidic. (Hint; Al3+(aq) ions can be written Al(H2O)63+(aq).)
What is the Cl ? concentration just as Ag2CrO4 begins to precipitate when 2.0 M AgNO3 is slowly added to a solution containing 0.048 M Cl ? and 0.048 M CrO42-
Suppose we want a soln containing 150 micrograms of the protein at a concentration of .5 mg/ml. To do this we will first evaporate the liquid from enough of the protein soln to get 150 micrograms. How much coln do we need to start with? How much H..
If a solution is made by mixing 20.0 mL 0.3 M NaCH3COO with 30 mL 0.4 M CH3COOH, calculate the pH of the solution? For acetic acid, K = 1.76 x 10-5.
The following results were obtained for the determination of sulfur in another coal sample. The average for 3 trials was 2.28 %S. Report the 95% confidence limits for the average sulfur content in this sample based on the knowledge from extensive ..
What is the molar mass of a nonelectrolyte compound if 3.42 grams of the compound dissolved in 41.8 grams benzene begins to freeze
What is the concentration of [Br?] in a solution of 15 mL of 5 M HBr when 5 mL of water is added?
Ammonium phosphate is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid with ammonia . What mass of ammonia is consumed by the reaction of of phosphoric acid? Round your answer to significant digits.
At what temperature would the population of the first rotational level of HCl be 1/e times the population of the ground state? Rotational constant for HCl, B, is equal to 10.59 cm-1.
Considering the properties required of molecules for them to undergo steam distillation, explain why a treating mixture of vanillin and eugenol to steam distillation would result in distillation of eugenol only.
what is the density of 53.4 wt% aqueous NaOH if 16.7 mL of the solution diluted to 2.00L gives 0.169M NaOH
calculate the N12+ concentration of a solution made by mixing .020 mols of Ni(NO3)2 into 1.0 L .22 M NH3
Calculate the quantity of heat in kJ, associated with a 33.5 degrees Celsius in temperature in a 5.85kg aluminum bar ( specific heat of aluminum= 0.903 J g-1 C-1 )
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