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What mass of sucrose should be combined with 521 of water to make a solution with an osmotic pressure of 8.15 at 285 ? (Assume the density of the solution to be equal to the density of the solvent.)
Explain Gibbs-Duhem Equation, In a certain binary solution, the activity of component 1 is given by
An alien rocketship is traveling at a speed of 40 inches per minute. At this speed, how many feet will it travel in 1 second? Round to the nearest thousandth.
How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.99? Kb for ammonia is 1.8*10^{-5}.
Which of the acids in question #3 would be the best choice to create a buffer with pH = 7.35? If you had 250.0 mL of a 0.20 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base would be required to make the buff..
Trichloroacetic acid (CCl3CO2H) is a corrosive acid that is used to precipitate proteins. The pH of a 0.050 M solution of trichloroacetic acid is the same as the pH
How much heat is required to convert 25.0g of ethanol at 25 degrees C to the vapor phase at 78 degrees C?
A chemistry student needs 80.0mL of acetone for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of acetone is 0.790g cm^-3.
A sample of argon gas occupies a volume of 950 mL at 25.0°C. What volume will the gas occupy at 50.0°C if the pressure remains constant?
A saturated solution of Na2SO4 with excess of the solid is present in equilibrium with its vapor in a closed vessel. Calculate the number of degrees of freedom, f, of the system.
What pressure is exerted by 0.625-mole of a gas in a 45.4-L container at -24.0°C?
Calculate the mean and standard deviation of w/v percentage of acetic acid and the 95% confidence interval for the mean. Calcium in a mineral was analyzed five times by each of two methods
Calculate the vapor pressure of a solution made by dissolving 109 grams of glucose
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