1
Q
definition of the enthalpy change of formation?
A
energy change when one mole of a compound is formed from its elements in their standard states
2
Q
definition of enthalpy change of combustion?
A
energy change when one mole of a substance is burnt completely in oxygen under standard conditions with all substances
3
Q
definition of bond enthalpy?
A
change in energy when one mole of gaseous covalent bonds is broken
4
Q
state Hess’s law
A
the enthalpy change during a chemical reaction is independent of the steps taken
5
Q
A
chemistry RMA
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