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Calculate the solubility (in mol/L) of Fe(OH)3 (Ksp = 4.0 x 10^-38) in each of the following situations: (A) Pure water (assume that the pH is 7.0 and remains constant). (B) A solution buffered at pH = 5.0. (C) A solution buffered at pH = 11.0.
Calculate the change in internal energy of the following system: a balloon is cooled by removing 0.651kJ of heat. It shrinks on cooling, and the atmosphere does 384J of work on the balloon.
The balloon is designed to continue its ascent to an altitude of 30 km, where it bursts, releasing a package of meteorological instruments that parachute back to Earth.
500.0 g of ammonia react with 51.0 moles of sulfuric acid to produce ammonium sulfate. how many moles of excess
When the flask is allowed to cool the vapor condenses and aire again refulls the flask. Re weighing the flask and figure out the the wight of the unknown vapor which filled the flask during the boiling. Explain why it is not necessary to know the w..
Use this ratio and that you collected 11 mg of 4-bromonitrobenzene to estimate the experimental yield of mononitration in the reaction. What errors are there in using this method to calculate the extent of mononitration
the carbon-14 decay rate of a sample obtained from a young tree is 0.238 disintegration per second per gram of the
Based on the mass of caffeine, you can now determine the % weight of caffeine in the original tablet. How does this compare with what the packaging states?
The reaction between bromate ions and bromide ions is acidic solutions is given by the following equation BrO3-(aq) + 5Br-(aq) + 6H+(aq) -> 3Br2(l) + 3H2O(l)
sulfuric acid (H2SO4) by mass has a density of 1.221 g/mL. Determine the molarity of the solution.
At 105 °C, the reaction 2NO2(g) ? N2O4(g) has Kp = 0.054. What is the value of Kc at this temperature?
a 105 g piece of metal is heated to 288 degrees c and dropped into 85.0g water at 26 degrees c. if the final
Compare and contrast conventional current regulations and oversights that exist in the United States with that of nonconventional medicine.
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