Determine the molar absorbtivity of the solution
An unknown concentration of a solution gave a Percent Transmittance of 68% under Spectronic 20 passing through 8mm path length. Calculate its concentration given that the molar absorbtivity of the solution is 0.723 L mol-1cm-1.
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A spherical balloon has a diameter of 50.0 cm, absolute pressure inside is 1.25atm and the temperature is 22 degree Celsius. Assume that all the gas in N2 is of molar mass 28.0 g/mol. (a) find the mass of a single N2 molecule. (b) How much transla
Scores on IQ tests have a symmetric distribution that is roughly bell-shaped. Reported IQs are scaled so that the distribution has a mean of 100 and a standard deviation of 15. Suppose that a standard IQ test is given to 2000 students. Use the 68-
A solution containing Pt4+ is electrolyzed with acurrent of 3.60 A. How many minutes will it take to plate out 89.0 percent of the platinum in 0.550 L of a 0.0150 M solution of Pt4+?
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