Solid silver oxide, decomposes at temperatures in excess of 300 C, yielding metallic silver and oxygen gas. A 3.13 g sample of impure silver oxide yields 0.187 g What is the mass percent in the sample? Assume that is the only source of [Hint: Write a balanced equation for the reaction.] O2(g).

Chem 111 Notes: ch.3 3/1 Stoichiometry the study of the quantitative relationships involving the substances in chemical reactions. Chemical equation An equation that describes the identities and relative amounts of reactants and products in a chemical reaction. Reactants The substances consumed Products The substances formed. Coefficients Numbers before the formula of a substance in an equation. Balanced equations are equations with the same number of atoms in each element in both the beginning and the end. To wrie a correct formula for an equation… Write the correct formula for each substance Add coefficients so the number of atoms are balanced on both sides of the equation. o If a fractional coefficient is received, mul