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the determination of aspirin in commercial preparations experment explain why the FeCl3-KCl-HCl solution was ased as a reference solution. suggest a procedure you could follow to determine whether it was necessary to use this solution as a reference or whether distilled water would have been just as satifactory
Oleum or fuming sulfuric acid availble commerically in concentrations ranging from 20 to 99% sulfur trioxide. 1. What is the percentage by mass of sulfer trioxide (SO3)
How many grams of CO2 are produced by the complete combustion of 2.00g of C8H18?
The vapor pressure of pure ethanol is 56 torr. if a solution prepared from 560.0 g of methanol and 210.0 g of ethanol has a vapor pressure of .31 atm over the soultion.
What is the pH of a propanoic acid - propanoate buffer that is 0.25M in CH3CH2COONa and 0.15M with respect to CH3CH2COOH.
A an aqueous methanol (CH3OH) solution has a mole fraction of 0.430 of methanol. What mass of water would be present in 706 g of this solution?
Solid silicon and solid magnesium chloride form when silicon trichloride gas reacts with magnesium metal. Write a word equation and an unbalanced formula equation.
calculate the pH of a soluion created by mixing 389.5 mL of .182 M HC4H7O2,
if 6.73 g of NaCo3 is dissolved in enough water to make 250. mL of solution what is the molarity of the sodium carbonate ?
What volume of 0.1M NaOH is required to fully neutralize 20 mL of 0.1M acetic acid? of 50 mL of 0.04M Phosphoric acid
a canister contains 425 kpa of carbon dioxide, 750 kpa of nitrogen, and 525 kpa of oxygen. What is the total pressure of the container?
compute the energy levels for the rotation perpendicular to its symmetry axis at J=1. T he bond length in the 14NH 3 =101.2 pm and NHN bond angle 106
During a titration, a student used 31.92 ml of a .1000 M NaOH (aq) to neutralize 30.0 ml of a . 2488 M oxalic acid solution. a. Write the balanced equation for the neutralization reaction ( you need the formula of oxalic acid)!
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