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Before investigating the scene, the technician must dilute the luminol solution to a concentration of 2.00×10-2 it M. The diluted solution is then placed in a spray bottle for application on the desired surfaces.
How many moles of luminol are present in 2.00 L of the diluted spray?
What is the total energy of the photons detected in a period of one hour If a radiation detector is capturing 8 X 10^7 photons per second at this wavelength,?
A tightly sealed 5.0 L flask contains argon at 69.0 deg. C and 781 mm Hg. The flask is heated until the pressure is doubled. What it the temperature of the gas.
How many mL of oxygen gas, measured at 757.2 mm HG (uncorrected) and 22.8 C by the displacement of water, would you expect to obtain from the complete decomposition
The rate constant of some reactions double with every 10 degree rise in temperature. Assume that a reaction takes place at 295 K and 305 K. What must the activation energy be for the rate constant to double as described?
Write the structures of the following compoundsa) 2,2-dibromo-3,3-dichloro-5,5-difluoro-6,6-diiodobicyclo{2.2.1}heptane
Benzene has a heat of vaporization of 30.72;{{rm{kJ}}}/{{rm{mol}}} and a normal boiling point of 80.1 ^circ {rm{C}}. At what temperature does benzene boil when the external pressure is 420 torr?
Suppose you have 0.001 M solution of a dye with pka of 7.2. from the color, concentration of protonated form is found to be 0.0002 M. Assume remainder of the dye is in the deprotonated form. What is the pH of the solution?
the trunk remains undistrubed for 13,750 years what percentae of the original c-14 is still present ? ( half life of c-14 = 5730)
The weight of the initial mixture is 5.020 g, and the weight of the resulting anydrous compounds is 2.988 g. Which choice is closest to the percent by mass of copper(II) sulfate pentahydrate in the original mixture? Steps?
Determine how long will it take for a sample of N2O5 to decay to sixty percent of its initial value?
What is the maximum amount of O2 in grams that can be obtained from 2.00 x 102 g of nitroglycerin?
If a bottle of nail polish remover contains 176 mL of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788g/mL.
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