Question

how many atoms are present in one mole of ozone.
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Answer 1

$$\begin{gathered} 1moleofozonecontains6.022\times {10}^{23}molecules. \\ 1moleculeofozonecontains3atomsofoxygen. \\ 6.022\times {10}^{23}moleculescontains=6.022\times {10}^{23}\times 3 \\ =18.066\times {10}^{23}atoms \end{gathered}$$