19 an effective collision between reactant particles requires the particles to have the proper
(1) charge and mass
(2) charge and orientation
(3) energy and mass
(4) energy and orientation

Express the following number in scientific notation. 0.026890 =

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma

If 22.5 of nitrogen at 748 mm hg are compressed to 725 mm hg at constant temperature. what is the new volume?