CHEM 111 Lecture Notes - Lecture 35: Molar Mass
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21 Dec 2015
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Chem111 lecture 35 kinetics in gases. Dalton"s law: total pressure equals the sum of partial pressures. Partial pressure: the pressure each gas would exert if it alone occupied the volume. Xa + xb + xc = 1 (for a mixture of 3 gases, a, b, and c) For given set of conditions: p is directly proportional to n. Is known as the mole fraction given the symbol x. Kinetic energy of an object = mv2, where m is mass and v is velocity. All gases behave the same at the molecular level: molecules (or atoms) are in constant, random motion. P and n: as n increases, the number of collisions with the walls increases and so the force on a given area increases, p increases. P and t: as t increases, the energy of the molecules colliding with the walls increases and so the force on a given area increases.
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