0.5g of a non-volatile solute is dissolved in 100g of ethyl acetate at 20°C. The vapour pressure of the solution and pure ethyl acetate are 72.0 torr and 72.8 torr respectively at 28°C. Calculate the molecular weight of the solute.

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump