ХА 1 Pretest: Unit 3
Question 21 of 30
How is Hess's law used to calculate the enthalpy change of a reaction?
O A. The enthalpy of the products is subtracted from the enthalpy of
the reactants.
O B. The enthalpy is calculated from the experimentally determined
equilibrium constant.
C. The enthalpy changes of each step of the reaction are added
together.
O D. The enthalpy is determined experimentally using a bomb
calorimeter.
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