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3 cards from this section. Quick, good the night before a test.
Define internal energy.
Think about what energy is contained within molecules.
What is the equation for enthalpy?
Remember what H represents in thermodynamics.
What does internal energy represent?
It's related to molecular activity.
True or False: Enthalpy is defined as H = U - PV.
Remember the definition of enthalpy.
Calculate the change in internal energy for a combustion reaction where 500 J of heat is added and 200 J of work is done by the system.
Identify heat added and work done correctly.
Given the standard enthalpy values for a reaction, what would be the heat of reaction if the formation values for products are 1000 kJ and for reactants are 600 kJ?
Pay attention to the products and reactants in your calculations.
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