Which of the following is correct?
a) one mole of oxygen atom contains 6.0221367X1023 atoms of oxygen
b) one mole of water molecules contains 6.0221367X1023molecules of water
c) one mole of sodium chloride contains 6.0221367X1023 formula unit of Nacl
d) all of these
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Answer:
the answer is all the these... cause all the answer is correct
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