2. Not so long ago, in a chemistry lab far far away… May the FORCE/area be with you

4. 1.Describe Boyle’s Law with a formula. 2.Use Boyle’s Law to determine either a pressure or volume 3.Describe Charles’ Law with a formula. 4.Use Charles’ Law to determine either a temperature or volume

6. P α 1/V This means Pressure and Volume are INVERSELY PROPORTIONAL if moles and temperature are constant (do not change). For example, P goes up as V goes down. Robert Boyle (1627-1691). Son of Earl of Cork, Ireland.

7. Boyle’s Law Summary Pressure is inversely proportional to volume when temperature is held constant.

8. A bicycle pump is a good example of Boyle’s law. As the volume of the air trapped in the pump is reduced, its pressure goes up, and air is forced into the tire.

9. P1P1 V1V1 P2P2 V2V2 (0.947 atm)(0.15 L)(0.987 atm)V2V2 0.14 L or 140 mL

10. P1P1 V1V1 P2P2 V2V2 (1 atm)(0.5 L)(0.5 atm)V2V2 1 L

12. If n and P are constant, then V α T V and T are directly proportional.  If one temperature goes up, the volume goes up! Jacques Charles (1746-1823). Isolated boron and studied gases. Balloonist.

13. Charles’s Original Balloon Modern Long- Distance Balloon

14. Charles’ Law Summary The volume of a gas is directly proportional to temperature, and extrapolates to zero at zero Kelvin. (P = constant)

17. V1V1 T1T1 V2V2 T2T2 0.075 L 298 K V2V2 323 K 0.081 L

18. V1V1 T1T1 V2V2 T2T2 2.75 L 293.0 K 2.46 L T2T2 262 K or -10.9 o C

19. 1.Describe Boyle’s Law with a formula. 2.Use Boyle’s Law to determine either a pressure or volume 3.Describe Charles’ Law with a formula. 4.Use Charles’ Law to determine either a temperature or volume

20. Pass the Clicker!!!

21. 1. 150. atm 2..0200 atm 3. 50.0 atm 4..0500 atm 5. Not listed

22. 1. -124 o C 2. 149 o C 3. 325 o C 4. 12.8 o C 5. Not listed

23. 1. 1140 L 2. 6.00 L 3. 1.50 L 4..00197 L 5..167 L