Question

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

Explanation:

Heating increases the rate of solute dissolution, and stirring while heating further speeds up the process by distributing the solute and bringing fresh solvent into contact with it. Larry's solution is at room temperature with no agitation, so it will dissolve the slowest. Jessica is heating her solution, which speeds up dissolution more than room temperature. Hunter is both heating and stirring, which is the fastest combination for dissolving the solute.

Answer:

Hunter → Jessica → Larry