Answer all parts as fully as you can, just as if it were a real exam (a)...

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Chemistry

Answer all parts as fully as you can, just as if it were a realexam
(a) State the First Law of Thermodynamics
(b) Explain the difference between heat and work
(c) Explain why the heat capacity of a gas is different atconstant pressure than at constant volume
(d) Explain what is meant by thestandard enthalpy of formation of a compound
(e) Explain what is meant by the standard enthalpy of combustionof a compound
(f) Use information in the Data section of the textbook tocalculate the standard enthalpy at 298K of the reaction N2(g) +3H2(g) â†’ 2NH3(g)
(g) Use your result from (f) to determine the change inenthalpy
(a) when 1 tonne (103 kg) of N2 is consumed
(b) when 1 tonne of NH3 is formed

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3.6 Ratings (326 Votes)

aThe first law of thermodynamics states that the energy of theuniverse is constant Energy can be transferred from the system toits surroundings or vice versa but it cant be created ordestroyedEuniv Esys Esurr 0First law describes how energy is conserved It says that thechange in the internal energy of a system is equal to the sum ofthe heat gained or lost by the system and the work done by or onthe systemEsysq wbHeatHeat is the transfer of energy between two objects due totemperature differencesThat is the energy transferred from a hotobject to a cold objectIt is important to understand See Answer

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