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What does Hess's law of constant heat summation state? | StemPy Lab
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What does Hess's law of constant heat summation state?
Chemistry
Easy
High School (11–12)
Chemical Thermodynamics › Enthalpy and Hess's Law
A-Level
AP
IB
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What does Hess's law of constant heat summation state?
The enthalpy of an element is always zero
The entropy of the universe always rises
Heat always flows from hot to cold
The enthalpy change of a reaction is the same whatever the route
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