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1. Define the following:
Reagent Blank
Sample Blank
Standard
Control
2. Enumerate three (3) methods of wavelength selection.
3. What is the principle of spectrophotometry?
4. What is the mathematical equation used to compute the concentration of a test analyte in clinical chemistry (using spectrophotometry)?
The trace metal detection test is utilized to detect traces of metal left by carrying a gun in contact with skin. The test requires a 0.20% w/v solution of 8-hydroxyquinoline (C9H7NO) dissolved in isopropanol rubbing alcohol. Require to prepare 25..
Calculate the pH of a solution containing 25.00 mL of 0.12M formic acid (Ka=1.7x10^-4) to which the following amounts of 0.10M NaOH have been added:
already have a solution that contains 10 mmol of acetic acid. how many millimoles of acetate will you need to add to this solution? the pKa of acetic acid is 4.74
Assume the merry-go-round can be modelled as a disk. What is the new angular speed of the merry-go-round? Express your answer in rad/s.
A 0.150- M solution of chloroacetic acid (HC2H2ClO2) has a pH of 1.86. What is the value of Ka for this acid and the percent ionization?
Consider the halide ions as nucleophiles. Briefly explain why F-, the strongest base among the halide ions, is the best nucleophile in polar aprotic solvents while iodide, the weakest base, is the best in protic solvents.
what is the balanced equation of the burning of an unknown hydrocarbon
Calculate the pressure of sulfur hexafluoride gas in the reaction vessel after the reaction. You may ignore the volume of the liquid reactants. Be sure your answer has the correct number of significant digits.
How do I write the reaction of the borohydride ion with water to form one molecule of H2 with curvy arrows
Write equations that show the process for the first two ionization energies of tin. Express your answer as a chemical equation.
Two substances are mixed together. Explain how the observer could determine if this reaction is just a mixture or an actual chemical reaction. Give an example of two reactants that would form a mixture and two reactants that would form a chemic..
Why cyclo propane is more stable than cyclohexane
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