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How many grams of Na2SO4 (FM 142.02) should be added to how many grams of sulfuric acid (FM 98.08) to give 1.35 L of buffer with pH 2.80 and a total sulfur (= SO42- + HSO4- + H2SO4) concentration of 0.200 M?
What are the products of a toluene-sulfuric acid reaction. and how may percent of them
230 ml of an hcl solution with ph of 3.60 is added to 200 ml of an hno3 solution. the resulting ph is 1.40. what was
using a sample of naphthalene c10h8 of 2.45 grams nbspis contaminated with a material noncombustible. nbspheat of
The total pressure of a mixture of N2O4 and NO2 is 1.5 atm. If Kp=7.1 (at 25 degrees C) calculate the partial pressure of each gas in the mixture.
At beginning of the work up stage of the lab procedure, the two phase reaction mixture probably contains the following:
what is the molecular formula for a substance that contains in 1.00 mole of sample 1.00 mole of S, 24.1 x 10^23 atoms of F, and 71.0 grams of Cl
How many kilojoules of heat must be provided to convert one gram of liquid water at 67 degrees Celsius into one gram of steam at 100 degrees Celsius?
a student placed 12.5 of glucose in a volumetric flask added enough water to dissolve the glucose by swirling then
A sample of gas has an initial volume of 2.4 L at a pressure of 855 mm Hg and a temperature of 298 K. If the gas is heated to a temperature of 387 K and expanded to a volume
Calculate the vapor pressure of each component, the total pressure, and the composition of the vapor phase when the mole fraction of Br2 is 0.050. Assume that the conditions of an ideal dilute solution are satisfied at this concentration.
After the Ketone react with sodium borohydride in ethanol. HCl be added dropwise, and then remove the ethanol by distillation, then add DCM and ice water.
Calculate the pH of an aqueous solution that is 0.020 M in HNO3 (aq) at 25 degrees Celcius. Is the solution acidic or basic
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