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A solution of the sugar mannitol ( molar mass 182.2 g/mol ) isprepared by adding 54.66 g of mannitol to 1.000 kg of water. Thevapor pressure of pure liquid water is 17.54 torr at 20oC. Mannitol is nonvolatile and does not ionize in aqueoussolution.
a.) Assuming that aqueous mannitol solutions behave ideally,calculate the vapor-pressure lowering for the above solution at20o C.
b.) The observed vapor-pressure lowering of the mannitol solutionabove is 0.0930 torr. Calculate the activity coefficient ( based onmole fraction ) of water in this solution.
c.) Calculate the osmotic pressure of the mannitol solution of part( b ) when it is measured against pure water, and compare it withthe osmotic pressure of the ideal solution.
In a beaker, I mix 50 ml of 3 M HCl with 100 ml distilled water. Both fluids are at 25 C initially. (Cp mix =. 0.985 cal/g-C) a. what is the final T.
The monthly average rainfall data (assumed to fall evenly over the whole watershed of 18 square miles) is as given below. The rainfall pattern repeats every year. The runoff from the land area of the watershed into the lake is 45% of the precipita..
You have a 48.9 g sample of water at the temperature of -60.0 degrees celcius. How much energy is required to: a) heat the ice to 0 degrees celcius
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A study of the system 4NH3(g)+7O2(g)--2N2O4(g)+6H2O(g), was carried out. A system was prepared with [NH3]=[O2]=3.60 M as the only components initially.
Calculate the pH of a solution when 0.200 moles of solid NaOH is added to 2.00 liter of 0.250 M HCl. Assume no change in volume.
Water beads on the surface of a freshly waxed car hood. Use your knowledge of intermolecular forces to explain
What is the PH change of a 0.270M solution of Citric Acid (pKa = 4.77) if citrate is added to a concentration of 0.145M with no change in volume?
A 10.0 g sample of krypton has a temperature of 25°C at 575 mm Hg. What is the volume, in milliliters, of the krypton gas?
Write balanced reactions for the complete combustion of each fuel and use standerd enthalpies of formation to calculate the amount of heat relesed per kilogram pf the fuel.
Using information in Appendices B and C, calculate the minimum number of grams of C3H8(g) that must be combusted to provide the energy necessary to convert 3.25 kg of H2O from its solid form at -11.0°C to its liquid form at 70.0°C.
The only difference is the H+-ATP stoichiometry. Given that the pH on the outside of the xeno-mitochondrial membrane is 6.014,
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