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4.50 g of methane gas (CH4) occupies 12.7 L at 310 K. Calculate the work, heat, energy and enthalpy change upon: reversible isothermal expansion by 3.3 L.
What are the relationships between change in internal energy, ÎU, heat, work and change in enthalpy, ÎH? You may wish to use a graph to illustrate your explanation.
The minimum energy required to start a reaction is:
(a) enthalpy
(b) activation energy
(c) heat of reaction