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To find out the molar absorptivity of your dye require preparing a series of solutions by dilution of your stock solution. Sketch a procedure you expect to utilize to prepare a series of solutions to determine the molar absorptivity of your food dye. The problem is outlined in the experiment guide Preparing Standards.
Enough of a monoprotic acid is dissolved in water to produce a 0.0113 M solution. The pH of the resulting solution is 6.43
Imagine a researcher allowed the paper chromatogram to develop for far longer than necessary in the mobile phase, such that the solvent front ran into the top edge of the paper and the spots continued to move.
it was observed that electrons were released with a kinetic energyke of 3.50times 10-19 joules when a metal was exposed
Estimate the ratios of the basic and acidic forms of the histidine side chain
A solution of a specific vitamin has ?max = 251nm and a concentration of 4.79x10^-7M. The absorbance of the solution at 251 nm is A = 0.175. What is the molar absorptivity of the vitamin at 251nm
what class of compounds is this characteristic and why and how can the relative scarcity of drugs that fluorescence be an advantage in some instances and a disadvantage in others?
A 3.00L container is rated to hold gas at a pressure no greater than 100atm. Assuming the gas law behaves ideally, what is the maximum number of moles a gas that this vessel can hold at 27 degrees C
Dehydration of two alcohols leads to preparation of methylcyclohexene. write chemical equations for both reactions.
The mole fraction of potassium nitrate in an aqueous solution is .0194. The density of the the solution is 1.0627 g/mL. Calculate the molarity of the solution.
The inside fluid temperature is 223 degrees celsius while the outside fluid temperature is 57 degrees celsius. Calculate the heat lost by the tube per meter of length.
If 22 mL of 7.0 M H2SO4 was spilled, explain what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid
Provide a method for separating the mixtures of two or three compounds, dissolved in a solvent diethyl ether. In each case one of the components will be a neutral compound.
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