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A) The normal boiling point of methanol is 64.7 degrees C. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 450.7 torr at 64.7 degrees C.
What is the mole fraction of methanol in this solution?
B) A solution is made by dissolving 34.8g urea (CH4N2O), a nonelectrolyte, in 275g water.Calculate the vapore pressure of this solution at 25C and 45C
vapor pressure of water25C 23.8 torr45C 71.9 torr
Calculate the work done in Joules when one mole of an ideal gas, initially at P = 9 atm, T = 298 K is expanded isothermally to P = 1 atm if (a) the expansion proceeds against a onstant external pressure Pext = 1 atm; (b) the external pressure is r..
Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no reaction occurs
The solubility of oxygen in water is 5.00M when the partial pressure of oxygen is 1.00 atm. Calculate the solubility of oxygen in water in contact with air
Propanol freezes at -89.5 degrees C and boils at 82.3 degrees C. What quantity of heat is needed to convert 10.0 g of solid 2-propanol at -89.5 degrees C to a vapor at 82.3 degrees C?
A gas occupying 28mL at standard conditions is heated to 18C while the pressure is reduced to 0.98221 atm. What is the new volume occupied by the gas? Answer in units of mL.
A balloon filled with helium gas has a volume of 500 mL at a pressure of 1 atm. The balloon is released and reaches an altitude of 6.5 km, where the pressure is 0.5 atm.
Consider the mechanism of reduction of WO3. At least two mechamisms are possible to the formation of HxWO3 during intercalation of WO3
monoprotic acid, has a pH=2.00. What is the value of the ionization constant, Ka for this acid?
A 48.1 mL sample of gas in a cylinder equipped with a piston is warmed from 22 degrees C to 90 degrees C. what is the volume at final temperature?
two naturally occurring isotopes with atomic weights 184.9530 and 186.9560. What is the percent abundance of the lighter isotope
The crystal structure of lithium sulfide Li2S is pictured here. The edge length of the unit cell is 5.88*10^2pm. What is the density of Li2S in grams per cubic centimeter?
Important information about Degree of Unsaturation, Dieldrin, C12H8Cl6O, is a pentacyclic compound formerly used as an insecticide. Can you help me to calculate the degree of unsaturation
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