A chemist accidentally leaves an open beaker containing 100.0 mL of a 0.400 M CuCl(aq) solution on a lab bench. They return a few days later to find that the volume of the solution has decreased to 30.

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asked Feb 20, 2021 70.7k views

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A chemist accidentally leaves an open beaker containing 100.0 mL of a 0.400 M CuCl(aq) solution on a lab bench. They return a few days later to find that the volume of the solution has decreased to 30.0 mL. What is the molarity of this partially evaporated solution, assuming the solute does not evaporate? Give your answer to 2 decimal places.