CHEM101 Lecture Notes - Lecture 5: Gas-Filled Tube, Strontium, Jmol

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CHEM101 Full Course Notes
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CHEM101 Full Course Notes
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What is the energy for one mole of photon? c = 2. 998 e8 ms-1 h = 6. 626 e-36 js. 6. 626 x 10-34 j s x 2. 998 x 108 m / s. E = 6. 626 e-36 js x 2. 998 e8 ms-1 h c. E = hc for one mole of photon: For one mole of photons, the energy = 4. 41 x 10-19 j photon-1x 6. 022 x 1023 photon mol-1. Atomic spectra atoms absorb energy (when heated or under electrical discharge) and then emit energy as electromagnetic radiation. E = 4. 41 e-19 j/photon x 6. 022 e23 photon/mol. The patterns of the emitted radiation are in the form of lines and so it is called the line spectrum of the atom. Hydrogen spectrum four lines = four specimens in the gas discharge tube. 4 the lines are white because we cannot see them. It is composed of several series of line spectrum - lyman (uv), balmer (visible),