The total number of atoms present in one mole of sulphuric acid, H2SO4, is
- A. 6.02 x 10^23
- B. 4.21 x 10^24
- C. 4.214 x 10^24
- D. 98
Explanation
One molecule contains 2 + 1 + 4, that is 7 atoms, so one mole contains 7 x 6.02 x 10^23, which is 4.214 x 10^24 atoms. The value 6.02 x 10^23 is the number of molecules, not of atoms, and is the trap in this question. The number 98 is the molar mass in grams per mole.
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