Identify the correct statement regarding the mole.
a) A mole of oxygen gas contains 6.02 x 10 23 atoms.
b) A mole of chlorine gas contains 2 x 6.02 x 10 23 molecules.
c) A mole of carbon dioxide contains two moles of oxygen atoms.
d) A mole of ammonia gas (NH 3) has a mass of 34.0 g.
e) A mole consists of the number of particles in exactly 12 g of naturally occurring carbon.
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