Aliquid mixture of benzene (a) and toluene (b) is composed of na = 2 mole of benzene (a) and no = 3 mole of toluene (b). at room temperature, the vapor pressures of pure benzene and pure toluene are pa* = 103.01 torr and pb* = 32.06 torr, respectively. (a) (4 pts.) as the pressure of the liquid solution is reduced at constant room temperature, at what pressure does the first vapor form? what is the composition of the first trace of vapor formed? (b) (4 pts.) as the pressure is reduced further at constant room temperature, at what pressure does the last trace of liquid disappear? what is the composition of the last trace of liquid? assume that the liquid phase is an ideal solution and the vapor phase is an ideal gas mixture.

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Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.