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If 10.6 ml of (±)-a-phenylethylamine (MM=121.2 d=.94) are reacted with .083moles of (+)-tartaric acid then:
a) How many grams of solid NaOH (MM=40.0) are needed to convert the(-)-amine diastereomeric salt into its free amine?
b) How many mL of a 2.5 M NaOH solution are needed to convert the(-)-amine diastereomeric salt into its free amine?
An experimenter finds that she is unable to establish a premixed carbon monoxide flame when using an oxidizer composed of high-purity O2 (21%) and high-purity N2 (79%)
A 20 mg sample of a compound is dissolved in 5.0 ml of water and extracted with 2.5 mL of heptane.After separation of the layers, the heptane layer is found to contain 15 mg of the compound. What is the partition coefficient of the compound, Khept..
So what have we discovered? What is the elemental identity? Show work in detail please. Displacement - 0.00202 L
calculate the standard reduction potential of Joaquium. Write reaction in cell notation form.
During the discharge of an alkaline battery, 13.9 g of Zn are consumed at the anode of the battery. What mass of MnO2 is reduced at the cathode during this discharge
The amino acid histidine has three pKa's at 1.8, 6.0 and 9.3. In a 0.01 M solution of histidine, what is the concentration of protonated carboxylic acid at pH 7.4? The primary amine? The side chain?
What would the major product of the reaction be if t-butyl alcohol was combined with acetic acid in the presence of H2SO4?
A sample containing both enantiomers is found to have an observed rotation of +0.87 degrees in a one dm tube at a concentration of 0.025 g/mL. What is the optical purity of the sample? What is the % of the dominant enantiomer in this sample?
Why is it more difficult to identify all of the components of a mixture than it is to identify the cation and anion that make up a simple salt
Calculate the standard free-energy change for the following reaction at 25 degrees C. 2Au^3+(aq) + 3 Cr(s) 2Au(s) + 3Cr^2+(aq)
After 79.0 min, 35.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
Aluminum will react with bromine to form aluminum bromide (Al2Br6). How many moles of Al are needed to form 28.0 mol of Al2Br6?
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