Which of the following contains the least num | vedclass

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(D) The number of molecules is directly proportional to the number of moles $(n = \frac{	ext{mass}}{	ext{molar mass}})$.$A) \, n = \frac{18 \, g}{18

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$20 \, g \, C_2H_5OH$

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(D) The number of molecules is directly proportional to the number of moles $(n = \frac{	ext{mass}}{	ext{molar mass}})$.$A) \, n = \frac{18 \, g}{18 \, g/mol} = 1 \, mol$$B) \, n = \frac{22 \, g}{44 \, g/mol} = 0.5 \, mol$$C) \, n = \frac{16 \, g}{16 \, g/mol} = 1 \, mol$$D) \, n = \frac{20 \, g}{46 \, g/mol} \approx 0.435 \, mol$Since $0.435 < 0.5 < 1$,the sample with $20 \, g \, C_2H_5OH$ has the least number of molecules.

Which of the following contains the least number of molecules?

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