What is/are the only reason(s) that a reaction may have a percent yield above 100%? Group of answer choices

A. Excess Water Only

B. Impurities Only

C. Impurities and Excess Water

D. No reaction will every have a percent yield above 100% for any reason.

C

Explanation:

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

a electronegativity decreases beacuse the size of nucleus is bigger.