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The solubility of oxygen in lakes high in the Rocky Mountains is affected by the altitude. If the solubility of O2 from the air is 2.67 × 10-4 M at sea level and 25°C, what is the solubility of O2 at an elevation of 12,000 ft where the atmospheric pressure is 0.657 atm? Assume the temperature is 25°C, and that the mole fraction of O2 in air is 0.209 at both 12,000 ft and at sea level.
1. 1.75 × 10-4 M 2. 2.67 × 10-4 M 3. 3.66 × 10-5 M 4. 4.06 × 10-4 M 5. none of these
what wind flow rate entering the canyon would produce a pollutant concentration greater than 0.0025 gmol/ft^3 in the air coming out of the canyon?
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Assume you 0.010 mol of N2O4 (g) in a 2.0L flask at 50 degrees Celcius. After the system reaches equilibrium, [N2O4] is 0.00090 M. What is the value of Kc for this reaction
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List the following compouns from highest to lowest frequency.
Although the use of absorbances at 450 nm provided you with maximum sensitivity, the absorbaces at, say, 400 nm or 500 nm are not zero and could have been used throughout this experiment. would the same value of K be obtained at one of these wavel..
What is the molar mass of an unknown dipotric acid if 65.0 mL of a 0.15 M solution of KOH was needed to reach the second equivilance point in the titration of 0.03 g of the acid.
For each of the following equations, indicate the rate of change of all the other species relative to the rate of change of the underlined species
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