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(ii) ∆S (system) increases but ∆S (surroundings) decreases. When hiking up a mountain, a person may decide to take path A, which is almost vertical, or path B, which gradually winds up to the top. The conservation of energy: Internal energy. Table A–1 Molar mass, gas constant, and critical-point properties Table A–2 Ideal-gas specific heats of various common gases Table A–3 Properties of common liquids, solids, and foods Table A–4 Saturated water—Temperature table Table A–5 Saturated water—Pressure table Table A–6 Superheated water Table A–7 Compressed liquid water Table A–8 Saturated ice–water vapor Download Free PDF of Chemical Thermodynamics Chemistry notes for JEE Main. 1st Law of thermodynamics. Atkins, 6th edition, as an introduction to Chemical Thermodynamics. First Law: Heat and Work are both forms of Energy. Victor S. Thermodynamic Properties 3. ) authored by Yunus A. 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