Ricky and Shemane, who are stoked to be learning stoich, were working diligently on a chemistry assignment in class. Ricky realized that in most chemical reactions, there’s an excess of one reactant. How would Shemane correctly explain to Ricky why this occurs? the reaction will continue until all of the limiting reactant is consumed.

reactions do not take place unless there are unequal amounts of reactants.

the reaction will continue until all of the excess reactant is consumed.

reactions occur too quickly if equal amounts of reactants are used.

Why do the strengths of london (dispersion) forces generally increase with increasing molecular size? choose one: a. heavier atoms have stronger attractions for each other than lighter atoms. b. dispersion forces are all equal in magnitude; there is no size dependence. c. dispersion forces arise from the attraction between the nuclei of atoms, and larger molecules have larger nuclei. d. dispersion forces arise from dipoles caused by the electron distribution being distorted. larger molecules have more electrons and, therefore, more distortions and a bigger force. e. dispersion forces depend on distance. larger molecules are farther apart and so the forces are smaller.