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1) What is the advantage of measuring the absorbance of a solution at lambda max wavelength?
2) Under what conditions would it be wise to measure the absorbance of a compound at a wavelength other than lambda max wavelength?
Show how to synthesize 2-methyl-2-pentene from an alkyl halide and a aldehyde or ketone, plus any other necessary reagents.
A 184-mg sample of Na2CO3 is dissolved in H2O to give 3.00L of solution. What is the concentration of Na+ in parts per million (ppm)?
using any diagrams that you wish to draw, explain how the Ocean Optics spectrophotometer works. Note: we are not asking how to operate the spectrophotometer.
a bottle of phosphoric acid is labeled 85 h3po4 by mass density 1.689 gcm3. calculate the molality h3po4 in the
A 10.0 mL aliquot of the solution is titrated with a standard 0.101 M KSCN solution, requiring 7.0 mL to reach the red Fe(SCN)2+ end point. Calculate the percent mass of silver in the sample.
Problem- Spectroscopic data for three organic dyes, A, B, and C, are shown in the table. A solution containing a mixture of these three dyes in a 1.000-cm cuvet had absorbances of 0.4068 at 450 nm, 0.3017 at 480 nm and 0.4808 at 520 nm.
Important information about Heat and temperature, What is Heat? What is temperature? What are the various properties that account for temperature?
The entropy of hydration becomes more negative
the equilibrium constant for the reaction of bromine with chlorine to form bromine monochloride is 58.0 at a certain
Why is it recommended to use no more than the minimum amount of solvent than is necessary to dissolve the solid being recrystallized
To obtain a 18.0% (w/v) solution of copper sulfate (CuSO4), M.W.=160 when only the crystalline salt is available (CuSO4 5H2O, M.W.=250), what should the crystalline salt be weighed to prepare 450.0mL of solution
how would you know a strong acid from a weak acid without looking at some data? for example hbr hi hci are all stong
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