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What is the approximate value of the equilibrium constant, Kn, for the neutralization of hydrochloric acid with sodium hydroxide, shown in the equation below? HCL(aq) + NaOH(aq) --> H2O (l) + NaCl (aq)
A hydrogen molecule in it's ground vibrational state with KE=10eV coollides with heavy atom metal surface and no energy is transferred to the surface. The surface can be modeled as an infinite potential wall.
Calcium concentrations in solutions may be determined by a complex-forming reaction with EDTA. The reaction takes place between Ca2+ and EDTA4- with a formation constant of 4.5 x1010.
Titration of the excess unreacted EDTA required 15.9 mL of 0.0220 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN-.
How many mL of 5M NaCl are required to prepare 1500 mL of 0.002 M NaCl? What would be the concentration of the diluted solution from Problem expressed in mM, ?M, and nM
Using Le Chatelier's Principle to predict the effect of a change in conditions on a chemical equilibrium - Predict how the equilibrium of the following reactions will be affected by the changes listed.
how many no. of hydrogen ions are present in 10 millionth part of 1.33 cc of pure water at 25 degree celsius.
Give the symbol of the element in the fifth period of the periodic table with five valence electrons, Give the symbol of the element in the fourth period of the periodic table with four 4p electrons
An airplane is pressurized to 650 mmHg, Which is the atmospheric pressure at a ski resort at 1.30 * 10^4ft alt?
The solubility of nitrogen in water exposed to the atmosphere, where the partial pressure of nitrogen is 593 mm, is 5.3 × 10-4 M. At the same temperature, what would be the solubility of pure nitrogen, at a pressure of 760 mm?
Assuming that the water is contaminated, devise a method for disposing of the contaminated water without contaminating the environment, but allowing the recycling plant to resume operations as soon as possible.
The density of ethanol is 0.789 g/cm3. What is the density of the object?
The average speed of a nitrogen molecule at 20oC is 515 m/sec. How many minutes will it take the nitrogen molecule to cover exactly 20 km?
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