MCQ
Which of the following is correct?
- A$1 \ mole$ of oxygen atoms contains $6.0221367 \times 10^{23}$ atoms of oxygen.
- B$1 \ mole$ of water molecules contains $6.0221367 \times 10^{23}$ molecules of water.
- C$1 \ mole$ of sodium chloride contains $6.0221367 \times 10^{23}$ formula units of $NaCl.$
- ✓All of these