NEED HELP ASAP What is the minimum mass of NH4SH(s) that must be added to a 2.00L container to be able to reach equilibrium at 491K?

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.

i think it's letter a.

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