Chemistry Cumulative Exam Review Study Guide Latest Updated

(Reaction Rates and Chemical Equilibrium) In the hypothetical reaction below, substance A is consumed at a rate of 2.0 mol/L·s. If this reaction is at dynamic equilibrium, at what rate will substance B be consumed? A mc005-1.jpg B {Ans: C) 2.0 mol/L·s}(Stoichiometry) What is the percent by mass of oxygen in carbon dioxide (CO2)? Use mc008-1.jpg. {Ans: C) 72.71%}(Changes in Matter and Chemical Reactions) Shown below is a chemical reaction. Fe + CuCl2 mc009-1.jpg FeCl2 + Cu Which pair of substances are the products? {Ans: D) FeCl2 and Cu}(Reaction Rates and Chemical Equilibrium) What is the main reason that it takes 2 to 3 minutes for the reaction to occur between sucrose and sulfuric acid in the dehydration of sucrose? {Ans: A) The activation energy needs to be overcome in the reaction.}(States and Changes of Matter) Which is an aspect of the kinetic-molecular theory and can be used to explain the compressibility of plasmas? {Ans: A) Particles move independently of one another and are widely spaced.}(Stoichiometry) The percent by mass of copper in CuBr2 is Use mc004-1.jpg. {Ans: A) 28.45%}