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Ammonia is a weak base that dissolves in water, Kb= 1.8x10^-5. Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100 mL of a 0.150-molar solution of ammonia.
If 0.0800 mole of solid magnesium chloride, MgCl2 is dissolved in solution prepared in part b and resulting solution is well stirred, will a preciptate of Mg(OH)2 form? Ksp for Mg(OH)2 = 1.5 x 10^-11
An empty aerosol can at 25 degree celcius still contains gas at 1.00 atmosphere pressure. If an empty can is thrown into a 488.2 degree celcius fire, what is is the final pressur in the heated can.
What are the masses of CO and CO2 in the tank and what are the partial pressures of each of the three gases at 24C?
in the electrolysis of a sodium chloride solution, what volume of H2 is produced in the same time it takes to produce 257L of Cl2, with both volumes measured at 50 celcius degrees and 2.50atm
At a particular temperature, N2O5 decomposes according to a first-order rate law with a half-life of 3.0 s. If the initial concentration of N2O5 is 1.0 × 1016 molecules/cm3, what will be the concentration in molecules/cm3 after 11.3 s?
What is the total pressure in torr of a gas in a sealed flask that contains oxygen at a partial pres. of 0.41atm and water vapor at a partial pres. of 358mmHg?
What is the molarity (M) of a solution that contains 2.08 grams of NaOH (MM = 40.00 g/mol) in 79.65 mL of solution.
what is the final volume of a 400.0 ml gas sample that is subjected to a temperature change from 22.0 degrees C to 30.0 degrees C and a pressure change from 760 mm Hg to 360 mm Hg
determine the amount of heat energy needed to convert 255g of substance x from 40 degrees to 300 degrees
What mass of sucrose should be combined with 541 of water to make a solution with an osmotic pressure of 8.30 at 295 ? (Assume the density of the solution to be equal to the density of the solvent.)
Mg3N2 + 6H2O ----> 3Mg(OH)2 + 2NH3 When 36.0g of H2O react, how many grams of NH3 are produced?
The name of this covalent compound is nitrogen trioxide. d. The name of this ionic compound is manganese oxide.
In the chemical formula for alu, there are 12 water molecules present. It is also possible to prepare the anhydrous compound potassium aluminum sulfate. On the "molecular scale" describe how a crystal of alum differs from a crystal of potassium al..
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