How many milliliters of air are there in a hole measuring 5 L?
A) 5000 mL
B) 200 mL
C) 5 mL
D) There are no milliliters of air in this hole.
Question 2
Organic synthesis is useful ________.
A) as an intellectual challenge
B) for the large-scale production of rare organic molecules
C) as a confirmation on the chemical structure of molecules isolated from nature
D) all of the above