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An attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotation of +12.1 degree. If it is known that the specific rotation of the R. enantiomer is -32.4 degree, determine the percentage of each isomer in the mixture
R enantiomer:_________%S enantiomer:_________%
HZ is a weak acid. An aqueous solution of HZ is prepared by dissolving 0.020 mol of HZ in sufficient water to yield 1.00 L of solution
A dead alkaline battery is found to contain a compound of Mn and O. Its analysis gives 69.9% Mn and 30.4% O. What is the empirical formula for the substance.
At what temperature does water boil on the top of Mount Everest, elevation z=8848m. Recall that the dependence of pressure with altitude is given by P=Patmexp^(-MWgz/RT) where, Patm is atompheric pressure, g is the gravitational acceleration, and ..
Consider the following reaction 2Fe 2(aq) +Cu 2 ---> 2Fe 3 (aq) Cu, When the reaction comes to equilibrium, what is the cell voltage
The vapor pressure of liquid chloroform, CHCl3, is 400.0 torr at 24.1°C and 100.0 torr at -6.3°C. What is Hvap of chloroform?
Determine whether each of the following salts will form a solution that is acidic, basic, or Ph -neutral. K2CO3, KCl, NH4ClO, CH3NH3Cl, Fe(Clo4)3
What is the pH of a buffer that results when 33g NaHCO3 is mixed with 100mL of 2.50 M NaOH and diluted with water to 250mL
A 2.158g vitamin C tablet was analyzed for ascorbic acid content. 1.785g of the tablet was used to make 100mL of solution for titration. A 25.00mL sampled of the solution required 11.85mL of 0.0982 M NaOH for neutralization.
Calculate the total mass of the neutrons in 19/9F. Use 1.008665 amu as the mass of 1/0N(mass of a neutron). Express your answer in atomic mass units to 7 significant figures. Calculate the mass defect of 19/9F. Use 18.9984 amu as the actual mass o..
Calculate the amount of Tris (hydroxlmethyl) aminomethane (Tris) necessary to make 100mL of a 0.100M Tris buffer that is equimolar in
An ice cube of mass 9.0g is added to a cup of coffee, whose temperature is 95C and which contains 130g of liquid. Assume the specific heat capacity of the coffee is the same as that of water.
If the BaSO4 residue was baked in an oven at 100C for several hours rather than air drying, what effect would this have on its mass and how would the initial concentration of H2SO4 be affected
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