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During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.