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If you take 25 mL of a 500 ppb solution and add sufficient water until the volume is 100 mL, and mix thoroughly what is the concentration of the final solution?You dilute 10.0 mL of a 2.50 M solution to 500 mL, what is the final concentration?
Balance the following redox reaction that occurs in a acidic solution using the half reaction method. Show work Pb(s) + PbO2(s) + H2SO4(aq) ---> PbSO4(s)
The activation energy for the gas phase decomposition of difluoroperoxide is 72.4 kJ. F2O2 F2 + O2 The rate constant at 238 K is 8.04E-4 /s. The rate constant will be /s at 286 K.
The vapor pressure of water is 23.8 mm Hg at 25 oC. If the wet H2 gas formed occupies a volume of 6.84 L, the number of grams of H2 formed is g.
What is the rate constant of a first-order reaction that takes 5.80 minutes for the reactant concentration to drop to half of its initial value
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 332 units was obtained for the intensity of the 671 nm red emission line.
calculate how many pounds of carbon dioxide are produced when 40.00 gallons of gasoline are combusted. Assume that the primary ingredient in gasoline is octane, C8H18(l), which has a density of 0.703 g·mL-1
The Kw of water at 60 C is 9.5E-14. Explain what is the pH of a neutral solution at 60 C. Answer should be rounded to two decimal places.
what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation)?
In Europe, gasoline efficiency is measured in km/L. If your car''s gas mileage is 23.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142-km trip in Europe?
Consider a saturated solution of calcium fluoride in 0.092 M potassium nitrate. Complete the following tasks, and then answer the question. a) Write the chemical equation corresponding to Ksp.
to determine the partial pressure and the total pressure using daltons law of partial pressures.a mixture of gases
What type of forces must be overcome when solid I2 is dissolved in dissolves in methanol, CH3OH? What type of forces must be disrupted between methanol molecules when I2 is dissolved?
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