By measuring the equilibrium between the liquid and vapor phases of an acetone (A) - ethanol (E) solution at 57.2 ◦C and 1.00 atm it was found that xA = 0.400 and yA = 0.516. Calculate the activities and activity coefficients for both components in this solution using the Raoult’s law basis. The vapor pressure of the pure components at this temperature are: P ∗ A = 786 torr and P ∗ E = 551 torr. (xA is the mole fraction in the liquid and yA the mole fraction in the vapor.)

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar