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Consider an aqueoous solution of sugar, C12H22O11 (M= 342g/mol), in water. Its density is 1.05 g/mL. The mole fraction of sugar in solution is 0.0286. Calculate the vapor pressure of the solver over the solution at 25 degrees C. The vapor pressire of pure water at 25 degrees C is 23.8 mm Hg
Trimethylamine (CH3)3N is a substance responsible in part for the smell of fish. it has a boiling point of 3.5 degrees c and a molecular weight of 59.1.
The molecular weight of ibuprofen was determined by mass spectroscopy to be 206.287 g/mol. What is the molecular formula for ibuprofen?
The equilibrium constant is 100. Calculate the concentrations of O2 present at equilibrium
Compute the number average molecular weight for a polypropylene for which the degree of polymerization is 15,000.
As a separation and detection method, would TLC or paper chromatography yield better results in the analysis of each of the following pairs of compounds?
A 64 g piece of ice at 0 degrees celsius is added to a sample of water at 9 degrees celsius. all of the ice melts and the temperature of the water decreases to 0 degrees celsius. How many grams of water were in the sample?
In the nitration of methyl benzoate, why do you wash the crystals with water followed by an ice-cold methanol washing? What is the purpose of pouring the reaction mixture over ice?
Determine q for the acid-base reaction, assuming that the liquids have densities of 1.00 g/mL and the same heat capacities as pure water.
what is the appropiate mechanism for the radical polymerization of 1-butyne? show the polymerization of three units of 1-butyne.
How many grams of oxygen are collected in a reaction where 235 mL of oxygen gas is collected over water at a temperature of 25 ^circ {rm C} and a total pressure of 704 torr?
A gas expands and does P-V work on the surroundings equal to 345 J. At the same time, it absorbs 191 J of heat from the surroundings. Calculate the change in energy of the gas.
Calculate thechemical potential of ethanol in solution relative to that of pureethanol when its mole fraction is 0.40 at its boiling point(78.3oC)
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