What evidence caused rutherford to change thomson plum pudding model into the nuclear model

Which best describes how johannes kepler developed his laws of planetary motion

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid