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Question about Combinatorial synthesis of a series of esters
1. Why are the crude ester mixtures washed with aqueous NaHCO3?
2. You wish to test 9 esters for antitumor activity. One and only one of the 9 esters will actually have antitumor activity. You will prepare the esters from an alcohol and an acid as was done in the lab experiment here. However, you will prepare mixtures containing 1 alcohol and 3 acids or mixtures containing 1 acid and 3 alcohols. How many mixtures will you need to prepare to find the 1 antitumor compound? How many of these mixtures will exhibit antitumor activity? Hint: You should construct a deconvolution table similar to the one shown below.
3. If the experiment performed in question 2 gave exactly 3 mixtures with antitumor activity, how many of the 9 esters would be antitumor agents?
Imagine that you have a 7.00 litre gas tank and a 3.00 litre gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
A solution of 116 mL of 0.170 M KOH is mixed with a solution of 230 mL of 0.240 M NiSO4. What precipitate forms?
What is the molality of ethanol in a solution made by dissolving 14.6 g of ethanol, C2H5OH, in 53.6 g of water?
Metallic magnesium reacts with steam to produce magnesium hydroxide and hydrogen gas. a. If 16.2 g Mg are heated with 12.0 g H2O, what is the limiting reactant?
A solution was prepared by dissolving 28.0g of KCl in 225g of water. Calculate the mass percent of KCl in the solution.
A solution of ammonia and water contains 3.00×10^25 water molecules and 5.80×10^24 ammonia molecules. How many total hydrogen atoms are in this solution?
LiI has a lattice E of -7.3x10^2 kJ/mol and a heat of hydration of -793kJ/mol. Heat of solution is -60kJ/mol. Determine how much heat is evolved
Evaluate the energy of an electron excited from a hydrogen atom using Bohr's model. Determine the maximum wavelength of energy needed to observe a photoelectric effect for potassium.
Calculate the concentrations of all species at equilibrium for each of the given original mixtures. 1.2 mol of NOCl and 1.2 mol of NO in a 1.0-L flask? K = 1.6*10^-5 mol/L
If a bottle of nail polish remover contains 175mL of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788g/ML.
A chemical reaction is run in which 463 Joules of work is done by the system and the internal energy changes by -1027 Joules. Calculate the amount of heat transferred.
Mass of Carbonates Needed to Raise Solution pH One Unit, An actual lab titration of a mildly acidic process water at a pH of 4.0 requires 0.9 grams/liter of Na2CO3 to raise the pH from 4.0 to 5.0; re-running the titration but this time using CaCO3..
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