Stoichiometry Study Guide

Objectives

• Know how to calculate average atomic mass using relative abundances and masses of isotopes
• Know how to calculate molar mass of a compound from a chemical formula
• Know how to calculate the percent composition of a compound from its chemical formula
• Understand the meaning of the mole and how to interconvert between moles, mass, and number of particles
• Know how to calculate the empirical formula of a compound from both the % composition or from combustion analysis
• Know how to calculate the molecular formula from an empirical formula and molecular mass
• Be able to write a balanced chemical equation from words
• Know how to balance a chemical equation
• Understand the meaning of a balanced chemical equation( meaning of coefficients)
• Know how to convert from moles of reactant to moles of another, moles of reactants to mass of another, mass of a reactant to mass of another, mass of reactant to moles of another
• Know how to determine the limiting reagent in a reaction and calculate amount of product produced as well as calculate how much excess reagent remains
• Calculate percent yield and theoretical yield