In order to analyze the waste water containing Co2+ from a manufactur- ing process, 1.0 L of water was evaporated to 10.0 mL and then placed in a spectrophotometer tube. The absorbance was found to be 0.30 A
(63% transmittance), Using your calibration curve, calculate the number
of milligrams of Co2 in 1.0 L of waste water,

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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.