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A mole of ideal gas has 1 5 0 0 kJ of heat added to it , causing it to expand irreversibly from 5 .

A mole of ideal gas has 1500 kJ of heat added to it, causing it to expand irreversibly from 5.0 m3 to 12.5 m3, against a pressure of
2.0\times 105 Pa.
(i) State the First Law of Thermodynamics, giving an appropriate equation.
(2 marks)
(ii) Explain, briefly, what is meant by the term state function and give an example of such a function.
(2 marks)
(iii) What is the change in the internal energy of the system?
(4 marks)
(iv) What is the change in temperature of the gas?
(2 marks)

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