In which case is number of molecules of water maximum?

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Accepted Answer

(1) Moles = $\frac{0.00224}{22.4} = 10^{-4}$, Molecules = $10^{-4} N_A$. (2) Moles = $\frac{0.18}{18} = 10^{-2}$, Molecules = $10^{-2} N_A$. (3) Mass = $18 	imes 1 = 18 	ext{ g}$, Moles = $\frac{18}{18} = 1$, Molecules = $N_A$. (4) Moles = $10^{-3}$, Molecules = $10^{-3} N_A$. Option (3) has the maximum number of molecules.

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