What is the concentration (% m/v) of the solution that contains 20.0 g NaCl in 800.0 mL solution? a. 5.00%
b.2.50%
c. 0.20%
d. 2.00%

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.

Find the missing probability in the table below a.0.10 b.40 c.0.80 d. 0.20

Heat energy, carbon dioxide, and water are released through which process? a. photosynthesis b. depolymerization c. digestion d. cellular respiration