Ascientist has been collecting data on the soil composition in a forest after a wildfire. every year she visits the forest and takes a sample from the same area. she then analyzes the sample and determines its content. she plans on collecting data for ten years and then determining the trends that have occurred. which type of investigation is the scientist performing? collective comparative experimental descriptive

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.