## Chemistry and Chemical Reactivity (9th Edition)

a) Water and carbon dioxide b) $C_2H_6 + 7/2\ O_2\rightarrow 2\ CO_2+3\ H_2O$ c) Number of moles of ethane: $13.6\ g\div 30.07\ g/mol=0.452\ mol$ From stoichiometry: $0.452\ mol\times 3.5_{O_2}/1_{C_2H_6}\times 32.00\ g/mol\ O_2=50.66\ g\ O_2$ d)The sum of the mass of the reactants: $13.6\ g+50.66\ g=64.3\ g$