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You are asked to prepare a standard solution of 10.0 mM of alanine at pH 5.66 for a biochemistry experiment. The pI of alanine is 6.01. What percentage of the alanine in the solution is present as the anion? (Hint: You may need to revisit the Henderson-Hasselbalch equation to solve this problem.)
Imidazole is a weak acid, and thus reacts with strong bases to form the corresponding anion. Show this reaction, and draw resonance structures that account for the stability of conjugate base.
Calculate the molarity of a solution of glycerol made by dissolving 69.000 mL glycerol at 15 degrees C in enough water to make 260.00 mL of solution
A solution of hydrochloric acid has a concentration of 12.8 mol/L. However, a chemistry professor needs HCl(aq) with a concentration of 0.100 mol/L for an experiment with his students.
Calculate the wavelength of this emitted light. B) What wavelength range would you expect this complex to absorb most strongly. Explain.
An 0.758 mol sample of neon gas at a temperature of 18.0 oC is found to occupy a volume of 24.0 liters. The pressure of this gas sample is. answer in mm Hg please.
Calculate ?H, q and w when 1.00 mol of helium at 5.00L and a temperature of 298.15K is expanded and heated simultaneously
what crystal structure would you predict for a crystal containing fe2+ and f-? with radii 75 and 136 pm
How many molecules of actin can a muscle cell hold. Given: cell is spherical and has no other components with a diameter of 50 micrometers. Diameter of actin is 3.8 nanometers.
Calculate the amount of energy (in Kj) necessary to convert 317g of liquid water from 0*c to water vapour at 172*c. The molar heat of vaporization of water is 40.79kj/mol.
Consider the following gas-phase equalibrium reaction: N2(g)+O2(g) 2NO(g); Kc=4.10x10^-4 at 2000 degrees C. If 6.0 mol of NO is introduced into a 1.0L container at 2000 degrees C, what is the concentration og NO when equalibrium is reached?
write balanced net ionic equations for the following electrolysis reactions using platinum electrodes
what mass of neon gas should be introduced into an evacuated 0.55 L to produce a pressure of 80 kPa at 30 degrees celsus
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