(Solved): 1. How many grams of iron(III) oxide, Fe2O3, can be produced from the reaction of 14.2g of ...

1. How many grams of iron(III) oxide, ${\mathrm{Fe}}_2{\mathrm{O}}_3$, can be produced from the reaction of $14.2\mathrm{g}$ of iron metal with $18.7\mathrm{g}$ of ${\mathrm{O}}_2$ ? $4\mathrm{Fe}(\mathrm{s})+3{\mathrm{O}}_2(\mathrm{g})?2{\mathrm{Fe}}_2{\mathrm{O}}_3(\mathrm{s})$ 2. What is the percent yield if $13.5\mathrm{g}\mathrm{SO}{\mathrm{O}}_2$ are obtained from the reaction of $21.3\mathrm{g}{\mathrm{of}}_2$ with $28.6\mathrm{g}$ of $\mathrm{ZnS}$ according to the following equation? $2\mathrm{ZnS}(\mathrm{s})+3{\mathrm{O}}_2(\mathrm{g})?2\mathrm{ZnO}(\mathrm{s})+2{\mathrm{SO}}_2(\mathrm{g})$ 3. Calculate the percent yield of $\mathrm{KCl}$ if $1.043\mathrm{g}$ of $\mathrm{KCl}$ are produced from the reaction of $2.112\mathrm{g}$ of ${\mathrm{K}}_2{\mathrm{CO}}_3$ with $135\mathrm{mL}$ of $0.255\mathrm{M}\mathrm{HCl}$ according to the following reaction. ${\mathrm{K}}_2{\mathrm{CO}}_3+2\mathrm{HCl}?2\mathrm{KCl}+{\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}$