When ethane, C₂H₆, reacts with chlorine, Cl₂, the main product is C₂H₅Cl, but other products containing Cl such as C₂H₄Cl₂ are also obtained in small quantities.

C₂H₆ + Cl₂ C₂H₅Cl + "Other Stuff"

The formation of these other products reduces the yield of C₂H₅Cl. Using the stoichiometry given in the chemical formula above, calculate the percent yield of C₂H₅Cl if the reaction of 170. g of C₂H₆ with 205 g of Cl₂ produced 166 g of C₂H₅Cl. _________ %