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Which of the following is CORRECT?
(A) 1 mole of oxygen atoms contains 6.0221367 × 10
23
atoms of oxygen.
(B) 1 mole of water molecules contains 6.0221367 × 10
23
molecules of water.
(C) 1 mole of sodium chloride contains 6.0221367 × 10
23
formula units of NaCl.
(D) All of these