Calculation: A) Simple distillation of Impure water:
1 - Volume of coloured water = 70.0 mL
2
- Volume of distilled water = 33.2 mL
3 - Recovery % = | (2) / (1) | x 100
%
B) Fractional distillation of a mixture of acetone and
water:
- Volume of the Mixture = 70.0 mL
2- Volume of distilled liquid (acetone = 29.8 mL
3 - Recovery % = | (2) / (1) 1 x 100=. %

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary