CHE 105 Lecture 5: Chapter 5
14 Feb 2017
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Document Summary
4 easily measurable properties of gasses: volume (v, pressure (p, temperature (t, number of moles (n) In determining the gas laws, we hold two of the properties constant and observe how the other 2 affect each other. Holding p and n constant volume varies directly with the absolute temperature. R = . 08206 (l*atm)/(mol*k) ideal gas constant. Can calculate the density and molar mass of a gas: m = molar mass, n = (mass/molar mass, d = (m/v) = (pm)/(rt, m = (grt)/(pv) More moles, more collisions with the container, higher pressure. At colder temperatures the velocity of gasses decreases. The volume of a gas is directly proportional to the number of gas molecules. To keep pressure constant, the volume must. Increasing the number of gas molecules causes more molecules to hit the wall. Total pressure of a mixture of gasses is the sum of the partial pressures.
