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Presume you have 100 mg of a sample dissolved in 0.6mL of water. The partition coefficient for the compound in water and ether is 4.0
1. Compute how much total compound you would obtain with 3x0.2mL extractions with ether.
2. Compute how much you would obtain with 1 x 0.6mL extraction.
3. Explain which method is more efficient
A sample of gas is made entirely of carbon dioxide and water, and there are 259 moles of carbon dioxide and 513 moles of water. If the total pressure of the sample is 21 atm, what is the partial pressure of each gas?
A weather balloon is filled with 5.0 liters of helium at 27C and 1.0 atm. what volume does the balloon have when it has risen to a point in the atmosphere where the pressure is 60 torr and the temperature is -160 C
consider the titration of 39.0 mL of 0.240 M HF with 0.215M NaOH. Calculate the ph at the following points. calculate the ph after the addition of 9.75 mL of base.
Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell (c) What is the value of the equilibrium constant for..
A 25.00-mL sample of well water containing dissolved iron was treated with hydroxylamine hydrochloride, pH 5 buffer, and 1,10-phenanthroline, and diluted to 100.0 mL. Absorbances were measured at 510 nm using a 1.00-cm cell.
at 40 degrees h2o2 decomposes according to reaction2h2o -gt 2h20o2data collected for the concentration of h2o2 at
how much of each solution do you need to prepare 1 L of buffer containing 20 mM glucose, 30 mM dihydrogen sodium phosphate, and arginine 1 mM? Explain in words how would prepare this solution.
Imagine a unit of charge called the zorg. A chemist performs the oil drop experiment and measures the charge of each drop in zorgs.
Write Lewis structures, including resonance structure and formal charges if necessary
calculate the final temperature of a mixture of 150.0 g of ice initially at -16.5C and 443.5 g of water initially at 84.0C
How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl? Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)
N-t-Bu-BN-indole undergoes electrophilic aromatic substitution regioselectively at the 3-position. Draw an orbital bonding diagram for N-t-Bu-BN-indole. Show only the p-orbitals that overlap in the aromatic p-system. Which lone pairs must be inclu..
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