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Tablets from a bottle of commercial aspirin gave a negative test with FeCl3. Several months later, tablets from the same bottle gave a positive test with FeCl3. How do you account for this result? Why?
A bottle is labeled only "Compound B (C6H12)" and contains a colorless liquid. You have been called in as an expert to identify this compound from its spectra
find the ph of the two equivalence points and the volume (ml) of 0.0414 M KOH needed to reach them in the titration of 17.3 mL of 0.130 M H2co3 (first equivalent point = ML KOH, and pH= )
determine at what pressure will pure H 2 O start to boil if its temperature is seventy five degree Celsius
It takes 45.0 to raise the temperature of an 8.00 piece of unknown metal from 13.0 to 24.5. What is the specific heat for the metal.
Calculate the vapor pressure of a solution containing 28.5g of glycerin (C3H8O3) in 125mL of water at 30.0 ?C. The vapor pressure of pure water at this temperature is 31.8 torr.
What is the molarity of a HCl solution if the reaction of 200mL of the solution with excess CaCO3 produces 10.5L of Co2 gas at 725mmHg and 18C?
A gas has a pressure of 4.82035 atm when its volume is 2.75 L. What will the pressure be when the volume is changed to 1.91015 L.
5000 joules of energy are added to 108 grams of silver, Ag, at 20°C. What is the final temperature of the metal? (the specific heat of silver is 0.235)
Assuming the [potato extract] is 0.001 M and you are going to make a 10 mL solution and each drop is 1/20th of a mL calculate the [potato extract] in each reaction solution.
Suggest a reason why the equilibrium between succinic acid and acetic anhydride lies on the side favoring formation
Reaction of NO with chlorine to yield NOCl is pseudo-first order if NO is present in a large excess. Determine the rate constant of this reaction i
how many moles of nitrogen are in 5.3 L container at 1.25 atm and a temp of 85 degrees C.
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