Chapter 4 Stoichiometry: Quantitative Information about Chemical Reactions - Study Questions - Page 179b: 13

Fluorine is the limiting reactant. $1704.0\ g\ SF_6$

Number of moles of the reactants: Ratio of the number of moles of the reactants: $35/1.6=21.9$ Fluorine is the limiting reactant. From stoichiometry: $35\ mol\times 8_{SF_6}/24_{F_2} \times 146.06\ g/mol\ SF_6=1704.0\ g\ SF_6$