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.

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied