Current passes through a solution of sodium chloride. In 1.00 s, 2.68 X 1016 Na+ ions arrive at the negative electrode and 3.92 X 1016 Cl- ions arrive at the positive electrode. (a) What is the current passing between the electrodes? (b) What is the direction of the current?
Chemistry 1A Week 2 Lecture 2 Chemistry: the science that seeks to understand what matter does by studying what atoms and molecules do Matter: anything that occupies space and has mass Scientific Method • Phenomena/Question/Problem • Perform Experiments • Identify Pattern • Determine evidence-based explanations for data • Design more experiments • Revise experiment to fit data Law: a summary of an extensive series of observations: explains what happens Theory: a collection of ideas and concepts used to account for a scientific law: explains why it happens Law of Conservation of Mass: reactants(m) = products(m) Law of Definite Proportions: when two or more elements combine to form