CEM142 1nd Edition Lecture 13Outline of Last Lecture I. Simultaneous equilibriaOutline of Current Lecture II. SystemsIII. TransferIV. First law of thermodynamicsV. ProcessesVI. Gas expansion/compressionCurrent Lecture-types of systems-open: exchanges matter and energy-closed: exchanges energy only-isolated: exchanges nothing-signs of transfer-positive: surroundings to system-system gains energy-negative: system to surroundings-system loses energy-laws of thermodynamics-1. Energy is neither created or destroyed, amount of energy in the universe is constant, energy can only be transferred-energy transfer processes-heat q: goes from higher to lower tempThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.-+ q = temperature increases in system-- q = temperature decreases in system-work (w): the ordered displacement of atoms-+ w = compression of system (volume decreases)-- w = expansion of system (volume increases)-0 w = 0 change in volume-processes-constant volume: deltaV=0 then w=0 so deltaE=q-isothermal: deltaT=0 so deltaE=0 therefore 0=q+w(q=-w)-all heat is transferred to work-adiabatic: q=0 heat can not escape or enter so deltaE=w-gas expansion/compression-against constant external pressure-w=-Pexternal*deltaV-state functions: what you need to know-V, P, n, T, E, H, S-against external pressure that’s always equal to pressure inside system-reversible process-temperature constant