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A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25oC. What is the molecular weight in g/mol of the unknown solute?
Describe the physical origins of linewidths in absorption and emission spectra. Do you expect the same contributions for species in condensed and gas phases
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.061 M NaOH.
Consider a solution that contains 66.0% R isomer and 34.0% S isomer. If the observed specific rotation of the mixture is -30.0°, what is the specific rotation of the pure R isomer
If the freezing point depression of water is -1.86 degrees/m, what would be the freezing point of this solution
Methane, CH4, reacts with oxygen to produce carbon dioxide, water, and heat. C2H4(g) + 3O2(g) arrow to 2CO2(g) + 2H2O(l) How much heat is absorbed or released if 15.00 g of O2 is reacted
A quantity of N2 occupies 62.2 L at a partic- ular temperature and pressure. Its density is 0.900 g/L. How many moles of N2 are in the container?
A typical absorption due to stretching of the C=O bond is 1750 cm-1. (5.25 x 10 ^13 s-1). What is the force constant for the stretching vibration?
What is the resonance structure that best describes the overall structure of the SNO+1 ion
A reaction mixture initially contains 2.8M H2O and 2.6 M SO2. Determine the equilibrium concentration of H2S if Kc for the reaction at this temperature is 1.3 x 10^-6 ?
A 0.75-L bottle is cleaned, dried, and closed in a room where the air is 22 degrees C and 44% relative humidity (that is, the water vapor in the air is 0.44 of the equilibrium vapor pressure at 22 degrees C
What is the anticpated rate in grams per minute at which ethanol will be formed at a rate of 100 L per minute at 573 K and 69.08 atm
A second 5.0 mL aliquot of river water was taken, 5.0 mL of reagent, and 5.0 mL of 1.0 ppm SDS were mixed and extracted in 20 mL chloroform and the absorbance of the chloroform layer was found to be 0.286. What is the concentration of SDS?
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