When a gas jar full of air is placed upside down on a gas jar full of bromine vapors, the red-brown vapors of bromine from the lower jar go upward into the jar containing air. In this experiment:(a) Air is heavier than bromine(b) Both air and bromine have the same density(c) Bromine is heavier than air(d) Bromine cannot be heavier than air because it is going upwards against gravity

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.

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate