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A Technologist is performing a colorimetric assay with a ELISA absorbance reader. The assay's color, when tested in a standard spectrophotomer is linear to an absorbance of 4.0, however the ELISA reader has a range of linearity which only extends to an absorbance of 1.2. Several of the wells has an approximate absorbance of 1.5, and are diluted 1:1 with a buffer. The absorbance values remain the same.
Why didn't the absorbance values change (considering Beer's Law)
Explain why bubbling a solution with an inert gas such as argon or nitrogen causes deoxygenation of the solution?
The purpose of this experiment is to find out which fabric out of polyester, polypropylene, cotton and wool is the most suitable to make a sling back chair.
A gas mixture is made by combining 8.0g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 18.08L. What is the molar mass of the unknown gas
A patient weighs 146 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25.0 mg of drug per mL of solution.
What is the mass of a piece of magnesium wire which produces 39.30 mL of hydrogen gas collected over water at 23 degrees celsius
The Ksp for AgBr is 4.1 X 10-13. Will a precipitate form if 25 ml of 3.45 X 10-8 M AgNO3 solution is mixed with 25 ml of 4.65 X 10-5 M NaBr solution
The acidic constituent in vinegar is acetic acid. A 10.0-mL sample of a certain vinegar contains 500. mg of acetic acid. What is this mass of acetic acid expressed in micrograms?
How many minutes would be required to electroplate 25g of chromium by passing a constant current of 4.80 amperes through a solution containing CrCl3
A cylinder contains 975 grams of chloroform, CHCl3, How many atoms of carbon are in the sample? How many atoms of chlorine are in the sample?
determine what is the vapor pressure of a solution made by dissolving 65.4grams ammonia in 259 grams of h2o at 55.0
During the synthesis of methyl 3-nitrobenzoate, when the reaction mixture is poured on ice, the product separates out as a solid. Why
CH3SH, has a substantial dipole mement (1.52) even though carbon and sulfer have identical electronegativities.
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