CHEM 110 Lecture Notes - Lecture 3: Enthalpy, Spectroscopy, London Academy Of Music And Dramatic Art

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31 Aug 2016
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Exothermic process- heat comes out of system into surroundings. Exothermic if temperature of water goes up because process is releasing heat to water. Endothermic if temperature of water goes down because process is gaining heat from water, water gets cold. Electrostatic energy- form of potential energy that results from the interaction of charged particles. Spectroscopy- study of light interacting with matter, is needed to learn about the structure of the atom high frequency -> short wavelength low frequency -> long wavelength. Light behaves as a wave c=landa*v lamda(wavelength)- distance between two adjacent peaks v(frequency)- cycles(waves) per unit time. Blackbody radiation- intensity of emitted light predicted by wave mechanics differs from the experimentally observed intensity. Planck"s proprose: e = n h (for one photo) n = integer number of photons. = frequency of emitted light h = plancks constant = 6. 626 10 34 j-s.

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