Problem: The image below represents a small volume within 550 mL of aqueous ethanol (CH3CH2OH) solution. (The water molecules have been omitted for clarity.)Which image below best represents the same volume of the solution after we add an additional 550 mL of water?

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Addition of water won't change the number of ethanol molecules in solution:

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Problem Details

The image below represents a small volume within 550 mL of aqueous ethanol (CH3CH2OH) solution. (The water molecules have been omitted for clarity.)


A space-filling molecular model depicting a collection of six ethanol molecules.

Which image below best represents the same volume of the solution after we add an additional 550 mL of water?

Three space-filling molecular models labeled a, b, and c. Model a depicts a collection of twelve ethanol molecules. Model b depicts a collection of six ethanol molecules. Model c depicts a collection of three ethanol molecules.

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