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Estimate the triple point pressure and teperature of water, given that the standard enthalpies of fusion and vaporization are 6008 J/mol and 43990 J/g at 273.15 K and 298.15 K, repectively, the vapor pressure of water at 25 degress C is 23.8 torr, and making suitable approximations to the Clapeyron equation to solve the problem.
A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution after the addition of 200.0 mL of KOH. The Kb of NH3 is 1.8 × 10-5.
The partial pressure of O2 in air at sea level is 0.21 atm. Using Henry's law, calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20C and an atmosphere pressure of 650 torr.
The diffusion coefficient versus reciprocal of the absolute temperature for the diffusion of iron in chromium. Determine values for the activation energy and preexponential.
An aqueous solution containing 21.6 mg of vasopressin in 100.0 mL of solution has an osmotic pressure at 25.0 oC of 3.70 mmHg. What is the molecular weight of the hormone?
If the pressure of the ocean breaks the submarine forming a bubble with a pressure of 250 atm pushing on it, how big will that bubble be?
When sodium carbonate reacts with hydrochloric acid, the carbonic acid that is formed immediately breaks down into carbon dioxide and water. What weight of sodium carbonate would have been present originally
48.61 g of magnesium was dissolved in diluted sulfuric acid and 490 g of MgSO4 . 7H2O was isolated from the solution. How many percent of impurities (if any) did the metal contain?
Determine E° for the reduction half-reaction Ce4+(aq) + e- → Ce3+(aq), given that the cell voltage for the following voltaic cell is E°cell = 1.887 V:
If 10 grams of an organic layer is extracted with an additional amount of fresh water, how much benzoic acid would be present in the organic layer
Assume that the only amino acid in a particular protein that absorbs at 280 nm is tryptophan, and that this particular protein has 2 moles of tryptophan per mole of protein.
A sample consisting of various gases contains 3.1 X 10^-6 mole fraction of radon. This gas at a total pressure of 31atm is shaken with water at 30 degree celcius.
Permenant sterility in women occurs at 300.0 rem of exposure. The source radiates with 3540 rem at 500.0 cm.
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