Mr. Gordon's science students are studying scale models of the Sun-Earth-Moon system. Mr. Gordon is using this model to show his students how the three bodies are arranged during a solar eclipse. One of his students commented that as a scale model, this model is not accurate. Is the student correct?

Which of these conditions most likely produces an unstable isotope?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.