Vocabulary
the “heat content” of a system or the potential of a system to create heat
Enthalpy
Exothermic
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change in enthalpy when one mole of substance if formed under pure elements
Standard Enthalpy of Formation
Steps:
1.Convert given amount of substance from grams to moles dividing by molar mass
2.Multiply that number of moles by ratio of ΔH term to coefficient in balanced equation.
Calculations with Thermochemical equations
processes transfer heat from a system to surroundings
Exothermic
Endothermic
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process that transfers heat from surroundings to system
Endothermic
measure of bond strength in a chemical bond, and is the amount of energy needed to break atoms apart in a molecular bond
Bond Energy