If 1.546 g of copper was used by a student at the start of the lab, and 0.732 g of copper were obtained at the end of the series of reactions, what was the percent recovery? Briefly explain how you found your
answer.

Percent recovery is 47.34 %

Explanation:

Percent yield is defined as the ratio of experimental yiled to theoretical yield in terms of percentage.

Putting in the values we get:

Therefore, the percent recovery is 47.34 %

catya that's not even a b or c

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.