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Three students are mixing the same type of solute in 500 ml of water. Jessica is heating her solution, Larry left his on the counter at room temperature, and Hunter is heating his solution while stirring it.
Which ranks who would fully dissolve the solute, from first to last?
Larry → Jessica → Hunter
Hunter → Jessica → Larry
Jessica → Hunter → Larry
Hunter → Larry → Jessica
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Hunter → Jessica → Larry
Explanation: Heating increases solubility and molecular motion (faster dissolution), stirring removes the saturated boundary layer and brings fresh solvent to the solute, so heating + stirring is fastest, heating alone is next, and room temperature without stirring is slowest.
Explanation: Heating increases solubility and molecular motion (faster dissolution), stirring removes the saturated boundary layer and brings fresh solvent to the solute, so heating + stirring is fastest, heating alone is next, and room temperature without stirring is slowest.
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