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1. Draw a flow diagram simply showing how to separate a neutral organic compound from an organic acid and purify both.
2.. Explain how you would extract a slightly polar organic natural product from a food (such as Carotene from Spinach or Lycopene from tomatoes). A model answer will have no more than 7 steps; Name your stationary (solid) phase and mobile phase and explain (in simple terms, don't babble on) your choice (Why?).
What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 308 torr at 25 oC? (At 25 oC the vapour pressure of pure pentane is 511 torr and that of hexane is 150 torr.)
Calculate the mass in grams of iodine (I2) that will react completely with 29.1 g of aluminum (Al) to form aluminum iodide (AlI3).
THF followed by basic peroxide and then acid. Give thpse three products; use arrows demonstrating electron movement to show details of the reactions, including the peroxide cleavage of the B-C bond.
A sample of molten iron occupies of a volume of 7.11 x 10-3 L. If the density of iron is 7.86 g/cm3, what is the mass of iron in grams in the sample?
Calculate the mass of KClO3 decomposed. The vapor pressure of water at 28 °C is 28.3 mmHg. (Hint: The gases collected are a mixture of oxygen and water vapor
The final temperature of the water in the calorimeter was 24.2 deg C. What is the heat capacity of the calorimeter?
Based on the following chemical equation 2C6H6 + 15O2 12CO2 + 6H2O calculate the number of moles of CO2 that will be produced
What are the three major buffer systems of the body and what are the chemical equations
Calculate Ecell for a galvanic cell constructed from a beaker of 0.0025M HCl with a standard hydrogen electrode at 1atm of pressure
How much 10.0 M HNO3 must be added to 1.00L of a buffer that is 0.001 M acetic acid and 0.1 M sodium acetate to reduce the pH 5.45?
7.41g of O2 are combined with 5.23g NH3 , and the reaction proceeds. What mass of NO is produced?
.850 L of 0.410 M H2SO4 is mixed with .800L of .240 M KOH. what concentration of sulfuric acid remains after neutralization
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