Both mass and weight are measured by using scales.
The reaction is an exothermic one because heat is released to the surroundings. An exothermic reaction is a chemical reaction where energy is being released as the reaction by light or heat. On the other hand, endothermic reaction needs energy input for the reaction to proceed.
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Explanation:
Workings are in the picture! first you get moles of Fe2O3, then you get moles of Al and then you get mass of Al!
