Prepare ~ 8.75 × 10–4 m cro4 solution from the ~1.25× 10–3 m k2cro4 stock solution. record the exact molarity of the stock solution. calculate the required amount of stock solution to make 10.00 ml of dilute solution. adjust this value as necessary (ratio) based on the volumetric flask available.

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.

The minerals found in bones are deposited by living cells called

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?