calculate the
mass concentration and molar concentration for 67.2% (by weight)
nitric acid solution. The density of nitric acid solution (67.2% by
weight) is 1.4 g/cm
6) A solution of sodium chloride (molecular weight 58.5) is
electrolyzed and it is found that a
current of 1 A liberates 1.3 x 10-3 kg of chlorine (atomic weight
35.5) in one hour. Sodium
chloride crystals of density 2.17 x 103 kg/m3 are analyzed by x
rays and the unit cell parameter is
found to be 5.6 x 10-10 m. From these data calculate the charge on
a monovalent ion.
7) In a Milikan oil-drop experiment, a certain droplet...
During exercise when the body lacks an adequate supply of oxygen to support energy production, the pyruvate that is produced from the breakdown of glucose is converted into lactate. High lactate levels can lead to acidity in the muscle cells as some of the lactate hydrolyzes to lactic acid. The dissociation of lactic acid to lactate is shown in the reaction below. Lactic acid has a pKa of 3.86. A solution containing a mixture of lactic acid and lactate was found to...
A) What is the pH of a solution with a fluoride concentration of
0.272 M? The Kb for F- is 1.47 x 10^-11.
B) Calculate the pH value of of a 0.015 M solution of pyridine,
C5H5N. The Kb of pyridine is 1.7 x 10^-9. Enter your values for a,
b, and c for the quadratic equation along with the final
answer.
What is the concentration of each of the following solutions?
(a) The molality of a solution prepared by dissolving 25.0 g of
H2SO4 in 1.30 L of water (b) The mole fraction of each component of
a solution prepared by dissolving 2.25 g of nicotine, C10H14N2, in
80.0 g of CH2Cl2