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Lecture 14.4- Diffusion (PREP)
- 1. Chemistry 14.4 Bellwork- Ideal Gas Law How many moles of oxygen gas are in a balloon at 25 C with an internal pressure of 1.1 atm and a volume of 1500ml? P 1 V 1 P 2 V 2 PV = nRT T 1 T 2 R= 8.31 L kPa / K mol R= 0.0821 L atm / K mol =
- 7. 14.6
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- 11. for Sample Problem 14.6
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- Three gases are combined in container T. The pressure that each gas exerts is independent of the pressure exerted by the other two gases. The pressure in container T is the sum of the pressures in containers A, B, and C. Interpreting Diagrams What is the relationship between the number of particles in containers A and C and the partial pressures of the gases in A and C?
- This climber is using a tank of compressed gas to supplement the supply of oxygen available at high altitudes.
- Firefighters carry tanks of compressed air. The tanks contain from 19.5% to 23.5% oxygen by volume.
- The diffusion of one substance through another is a relatively slow process. a) Bromine vapor is diffusing upward through the air in a graduated cylinder. b) After several hours, bromine vapors are near the top of the cylinder. Predicting What will happen as the bromine continues to diffuse?
- The diffusion of one substance through another is a relatively slow process. a) Bromine vapor is diffusing upward through the air in a graduated cylinder. b) After several hours, bromine vapors are near the top of the cylinder. Predicting What will happen as the bromine continues to diffuse?
- The character balloons used in parades are filled with helium gas so that they will float.