3 Combined Gas Law P1V1 T1 = P2V2 T2 Combine the relationships of the 3 gas laws to relate Pressure, Temperature, and Volume for a fixed amount of gasP1V1 T1 = P2V2 T2
4 Combined Gas Law Example A gas at 110 kPa and 30.0°C fills a flexible container with an initial volume of 2.0 L. If the temperature is raised to 80.0°C and the pressure increased to 440 kPa, what is the new volume?
5 Avogadro’s Principle V1 n1 = V2 n2 Equal volumes of gases at the same temperature and pressure contain equal numbers of particles.V1 n1 = V2 n21 mole of any gas occupies a volume of 22.4 L at STP.
6 Avogadro’s Principle Example Calculate the volume that moles of any gas at STP will occupy.
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