Question

a mother finds her daughters mug of hot cocoa on a table an hour after she had been drinking it. as the mother pours out the cocoa, she sees brown solids in the bottom of the mug. how can this be explained? (1 point) this would only happen if too much cocoa powder was added in the first place, because the solubility should not change. the cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went up. all dissolved substances will come out of solution over time. if the mother waits long enough, then all of the powder will appear at the bottom of the mug. the cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went down.

Explanation:

The solubility of cocoa in water decreases as the temperature drops. When hot cocoa cools down, the cocoa that was dissolved in hot water becomes less soluble and settles at the bottom as solids.

Answer:

The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went down.