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Unit Conversions
A. Show that nmol/µL is equal to mM, and mg/mL is equal to g/L.
B. Cells of a certain human tissue have an average diameter of 20µm. A single circular well of a 100-well plate has a diameter of 5.0 mm. What is the maximum number of cells that can be grown on the surface of a single well? Assume all cells are circular but deform to fit together perfectly with no space between them.
C. If 27 mg of a fluorescent dye is added to 10 mL of buffer and the dye has a MW of 317.56 g/mol, what is the final concentration in mM?
A patient weighs 165 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 mg of drug per mL of solution. How many mL of the drug should the patient receive?
How you will protect an underground pipe line from corrosion and what are biodegradable polymers or what are conducting polymers
Treatment of A with aqueous H2SO4 and Hg(II) gives a single ketone, C, C10H16O. Oxidation of A with KMnO4 gives CO2 and the keto carboxylic acid D shown below. Propose a structure for A.
Calculate the specific rotation of the compound. A sample of 150 mg of an organic compound is dissolved in 7.5 ml of water. The solution is paced in a 20-cm polarimeter tube and the rotation measured in a polarimeter
Tuning proton affinity. The pKa of an acid depends part,y on its environment. Predict the effect of each of the following environmental changes on the pKa of a glutamic acid side change.
How many grams of oxygen are required to completely burn 5.90g of C3H8 in the following unbalanced
What is the mass concentration of water vapor in the atmosphere at 25oC when the relative humidity is 60% and the saturation vapor pressure is 2800 Pa
A sample of 35 millimole of Krypton gas expands reversibly and isothermally at 373K from 5.25 cubic centimeters to 6.29 cubic centimeters. The internal energy, U, increases by 41.75 J.
If the pressure exerted by ozone in the stratosphere is 3 x 10^-3 and the temperature is 247 , how many ozone molecules are in a liter?
A stock solution of lactic acid is 0.04M and a stock solution of lactate is 0.25M. Calculate the pKa of lactic acid given that at these concentrations the pH is 3.90
Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 36.8 mL of hydrogen gas over water at 27°C and 764 mmHg. How many grams of aluminum reacted?
An open tubular chromatography column is 31.8 m long and has an inner diameter of 0.528 mm. The inside wall is coated with a layer of stationary phase 3.2 ?m thick. Unretained solute passes through the column in 2.23 min, while a certain solute ha..
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