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A solution of HCl is prepared by dissolving 5.00 mL of HCl in 55.0 g of water. What is the mass percent of HCl? (density of HCl is 1.23 g/mL)
Calculate the ionic strength of a solution that is 0.08 M in La(NO3)3 and 0.06 M in Fe(NO3)2.
A sample of dry air contains 210 mL of oxygen, 780 mL. of nitrogen, and 10 mL of all other gases. What is the pressure in mm of Hg due to the nitrogen if the total pressure was 1000 mm
A solution of potassium permaganate is standardized with iron metal, a primary standard. The iron is dissolved in acid, reduced to Fe(II), and titrated with permanganate.
Into a 50.00mL volumetric flasks were pipetted 10.mL aliquots of a natural water sample. Exactly 0.00, 5.00, 10.00, 15.00 and 20.00mL of standard addition solution containing 11.1 pp of Fe were added to each, followed by an excess of thiocyanate i..
You analyzed the C18 content of a sample of ground beef. You took 5 g of beef, homogenized into buffer and centrifuged. The volume of the supernatant was 14 ml.
calculate the pH of 50 ml of .15 M HCHO2 with 75 mL of .13 M NaCHO2
Question- Apply the Henderson Hasselbach equation to calculate the percentage of Articaine that is in the neutral form at pH 7.2pKa of Articaine is 7.6
You obtain an unknown acid. You weigh out .856 grams of it and dissolve it in 45mL of water. You titrate it with 27.4mL of .5 M NaOH. What is the equivalent weight of the unknown acid
The osmotic pressure of the solution is measured to be 8E-4 bar at 25 C. What is the calculated molar mass of the protein?
Calculate the value of each partition function. c) Use the TST to calculate the rate constant for the reaction D + H2à DH + H
the label on an aerosol spray can contains a warning that the can should not be heated to over 130degf because of the
Utilizing the average atomic masses for each of the following elements, Evaluate the number of atoms present in each of the following samples
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