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If the following three chemicals (benzyl alcohol, benzaldehyde and benzoic acid) were chromatographed using silica gel TLC plates, which should have the highest Rf value? Hint: What intramolecular forces are involved between each of these chemicals and the SiO2 of thesilica gel?
One mole of an ideal gas expands reversibly and adiabatically from an initial temperature of 35.0 degrees C and a volume of 10.0 L to a final volume of 40.0 L. Calculate the final temperature, the final pressure, delta U and w. Assume Cp = 20.28 J..
The complex cis-[PdCl2Br2]2- is planar. Explain how many vibrational modes will this species exhibit. Explain what can be said about the infrared and Raman spectra of this species
modify the 3 molecules so that they show the form that is dominant at physiological pH: formic acid, acetylsalicylic acid (aspirin), and citric acid
A balloon is inflated with 0.2494 g of helium to a pressure of 1.26 atm. If the desired volume of the balloon is 1.250 L what must the temperature be in degree celcious
Utilizing the mass of your "Goody's" powder (1.0g), compute the percent acetaminophen, percent aspirin, and percent caffeine claimed to be in the sample by the manufacturer Good'y 1g with acetaminophen 260mg; aspirin 520mg; caffeine 32.5mg
What is the freezing point of an aqueous solution of a nonvolatile solute that has a boiling point of 102.5°C? For water Kf = 1.86°C/m and Kb = 0.52°C/m.
When 1 of a fuel is burned at constant pressure, it produces 3452 of heat and does 13 of work. What is the value of delta H for the combustion of the fuel?
I dont understand how 'n' in the equation turned into 4.35x10^2...where did that number come from
A flask containing 36.8 mL of 0.138 M sodium acetate (NaC2H3O2) is titrated with 24.9 mL of 0.128 M HNO3. Calculate the pH of the solution. pKa for acetic acid = 4.757.
how many grams of formic acid hcooh must be added to 0.300 l of 0.110 m sodium formate hcoona to yield a buffer
Calculate how many grams of phosphorus are present in 2.68 moles of phosphorus pentachloride(PCl5) and also determine the numbers of moles of chlorine are present in 3.71 grams of phosphorus pentachloride?
Barium sulfate is relatively insoluble in water. At 25 degrees Celsius, only 244 mg will dissolve in 1 L of water. What volume is needed to dissolve 2 g of barium sulfate?
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