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The specific rotation of (R)-(+)-glyceraldehyde is +8.7. If the observed specific rotation of a mixture of (R)-glyceraldehyde and (S)-glyceraldehyde is +3.2, what percent of glyceraldehyde is present as the R enantiomer?
Consider the neutral form of the amino acid histidine a) When the neutral form of the amino acid histidine (HA) is titrated with HClO4, write the sequence of reactions that occur. Draw structures of reactants and products.
The neutrons from one treatment source have an average velocity of 3.4 x 10^7 m/s. If the velocities of the individual neutrons are known to within 2% of this value, what is the uncertainty in this position of one of them
Acyl chloride can hydrolyze in water spontaneously to carboxylic acid. In the interfacial polymerization water is used as one of the solvent, why you don't have to worry about the hydrolysis of sebacoyl chloride in this action
When they specifiy that "Measure out xx mg of the phosphonium chloride salt and the appropriate amount of aldehyde, equivalents with respect to the the phosphonium chloride)
If a 220 mg piece of gold (density =19.32 {rm g}/{rm cm}^{3}) is hammered into a sheet measuring 2.5times1.0 {rm ft}, what is the average thickness of the sheet in meters?
A 31.43 ml volume of .108M NaOH is require to reach the phenolphthalein endpoint in the titration of a 4.441g sample of vinegar. Calcute the percent acetic acid in the vinegar.
what ions will the following elements form?
potassium fluoride has a solubility of 92g of KF in 100 g of H2O at 18 degrees C. which of the following are saturated solutions and unsaturated solutions at 18 degrees C: a)46 g of KF and 100 g of H2O. b)46 g of KF and 50 g of H2O. c)184g of KF a..
A mixture of H2(g) and Cl2(g) exerts a total pressure of 2.50 atm. If the mole fraction of H2 is 0.490, what is the partial pressure of H2
Erythro-2,3-dibromo-3-phenylpropanoic acid undergoes eliminiation by an E1 pathway in water solvent (Part A conditions),
How many mL of a 22.5% (v/v) ethanol solution would you need to measure out in order to have 12.5 mL of ethanol. (Molar mass of ethanol is 46.07g/mol
A buffer solution is prepared by mixing together equal quantities of formic acid, HCHO2, and sodium formate, NaCHO2. Write equations that show what happens when first acid, and then base, is added to this buffer solution.
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