A chemist needs to know the mass of a sample of aniline to 3 significant digits. She puts the sample on a digital scale. This is what the scale shows: 0 0 100.4
If this measurement is precise enough for the chemist, round it to 3 significant digits.
Otherwise, press the "No solution" button.

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explanation:

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a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.