A coffee cup calorimeter initially contains 130g water at 22.7 Celsius. 12.4g of a Calcium Chloride, also at 22.7 Celsius, is added to the water and, after the CaCl2 dissolves, the final temperature is 38.0 Celsius. Calculate the enthalpy change for the dissolving of the salt in kJ/mol.

a patient chooses to not take a beneficial medical treatment.

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.