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1. 1,3-diester is less acidic than a 1,3-ketoester, which is less acidic than an 1,3-diketone due to increased electron donation by the -OR group of the ester.
2. Claisen reactions use a stoichiometric amount of base and do not polymerize, unlike aldol reactions that use a catalytic amount of base and can polymerize.
3. Beta-hydroxy ketones can be formed by thiazolium catalysis with aldehydes.
4. Aliphatic heterocycles typically act like normal ethers, amines, and thioethers unless there is a large amount of ring strain.
Show how many µL of protein sample you will take and add with the desired volume of DTT and Laemmli buffer to make the right concentration of sample.
Consider the molecule cyclohexane, which contains only hydrogen and carbon atoms. When a sample is burned in oxygen, 4.822 g of CO(2) and 1.650g of H(2)O are obtained. What is its simplest formula?
In the reaction of 1.00 mole carbon (C) with 3.00 mole oxygen (O2) to give CO2, if the actual yield is 30.0g
What is the molarity of a solution made by dissolving 5.69 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.)
The product of the final step in the synthesis below are acetone and acetaldehyde. What are the identities of compounds A and B?
Consider a piece of gold jewelry that weighs 9.78 g and has a volume of 0.680 cm3. The jewelry contains only gold and silver, which have densities of 19.3 g/cm3 and 10.5 g/cm3, respectively.
Using the thermodynamic data below, and a value of -717 kJ/mol for the Ulattice enthalpy for KCl, calculate the ionization energy of K. Hint: Remember to plug in numbers to the equation given in course content.
Draw the structure of the organic product that is formed when the compound shown below is treated with the following reagents
Calculate the molarity of 52.56 grams of Al2(SO4)3 in 1.80 L of solution.
A current of 5.64 A is pass through a Ni(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 8.80 g of nickel
Does the presence of water vapor affect the result? Explain why it does or does not have a large affect on the value obtained.
A buffer is prepared by adding 23.0 g of sodium acetate ( CH3COONa) to 500 ml of a 0.145 M acetic acid ( CH3COOH) solution. A)Determine the ph of the buffer.
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