What mass of sucrose should be combined
What mass of sucrose should be combined with 474 of water to make a solution with an osmotic pressure of 8.55 at 310 ? (Assume the density of the solution to be equal to the density of the solvent.)
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What measuring device would you use to measure the volume under each of the conditions described below? In some cases, there may be more than one answer to the question.
A 2.00-g sample of white solid was vaporized in a 345-mL vessel. If the vapor has a pressure of 985 mmHg at 158°C, what is the molecular mass of the solid?
What weight of a can be removed from a soluton that contains 6.00 grams of a in 50.0-mLs of water by a single extraction using 50.0 mLs of ligroin?
A 15.00 mL sample of this stock solution is added to 57.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution.
Benzoic acid is a monoprotic weak acid with Ka= 6.30 x 10 to the 5 negative. What is the pH of a solution of benzoic acid that is .559M in benzoic acid and has a2.25 X 10 to the 2 negative added?
Calculate the mass of propylene glycol (C3H8O2) that must be added to 637 g of water to reduce the vapor pressure by 4.74 torr at 40°C. The vapor pressure of pure water at 40°C = 55.3 torr.
How much energy in kilojoules is required to change 47.6 g of ice at 0 degrees celsius to liquid water at the same temperature in kilocalories?
The half-life of a certain radioactive element is 1,250 years. What percent of the atoms remain after 7,500 years?
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