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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?
Explain qualitatively how the results of the experiment would differ when potassium tert-butoxide is used as the base instead of potassium hydroxide. A correct answer will identify how the result(s) would differ, and explain mechanistically why th..
Calculate the amount of N2 gas released (in liters at 37oC and 1 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
A 9.0×10-2 M solution of a monoprotic acid has a percent dissociation of 0.60%. Determine the acid ionization constant Ka for the acid.
A buffer solution contains 0.1 mole ch3cooh and 0.1 M sodium acetate (that is it has .2 m total buffering components of acetic acid + acetate) calculate the pH after addition of 4 ml of 0.025
Calculate the molar mass of an unknown solid (assume a non nonelectrolyte) if 1.35 grams of the solid was dissolved in 15.0 grams of dodecanol and caused a freezing point depression of 2.34 degrees Celsius.
The pH of the resulting solution is 6.35. Calculate the Ka for the acid.
find the electronic configuration for ionization energies of magnesium the orbital number in which the electrons are
What is the molality of a solution that contains 2.93 grams of urea (molar mass = 60.0 g/mol) in 141 grams of benzene.
Values of the rate constant for the decomposition of N2O5 at four different temperatures are as follows: Determine the activation energy (I got this step right, Ea = 101.15 kJ/mole)
A 300.0-mL saturated solution of copper(II) peroidate (Cu(IO4)2) contains 0.44 grams of dissolved salt. Determine the Ksp.
at 80c the vapor pressures of pure liquids x y and z are 385 190 and 68 mmhg respectively. what pressure must be
An empty flask has a mass of 123.4 g. When the flask is filled with water, the mass is 211.6 g. If 10.0 g of zinc (d = 7.14 g/cm3) are added to the flask filled with water (and the sides of the flask are dried from the displaced water) what is the..
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