Which of the following statements about the mole is FALSE?
A) One mole of atoms makes up an amount of atoms that can be seen with the naked eye.
B) A mole of a monatomic element corresponds to one Avogadro's number of atoms.
C) One mole of a monatomic element has a mass equal to its atomic mass expressed in grams.
D) One mole of water contains 1/2 mole of oxygen atoms.
E) none of the above
Answer: D