1. Why is it important for industries to carefully control reactants that are in excess during the chemical processes used in their industry?
a. Excess chemicals can be released into the environment causing environmental damage.
b. Excess chemicals that are released into the environment and not used waste money.
c. Excess chemicals must be free of impurities to be effective in the chemical reactions.
d. Two of the above statements are valid.
e. All three of the above statements are valid.