Calculate the final pressure, in millimeters of mercury, for each of the following, if volume and amount of gas do not change: a. A gas with an initial pressure of 1200 Torr at 155 °C is cooled to 0 °C. b. A gas in an aerosol can at an initial pressure of 1.40 atm at 12 °C is heated to 35 °C.

20. Under 5.0 atm at 298 K, a gas sample takes up 6.0 mL. When placed in a volume of 3.0 mL at 298 K, its pressure becomes: A) 3600 atm B) 3.6 atm C) 0.010 atm D) 10. atm E) 2.5 atm

7. A gas has an initial volume of 40.0 Liters and an initial pressure of 760 torr. What is the final volume of the gas at the final pressure of 0.20 atmospheres? a. 20 Liters b. 200 Liters c. 160.0 Liters 8. If 4.0 moles of a gas occupy a volume of 2000 ml, what is its pressure at 273 K? a. 45 atmospheres b. 546 atmospheres c. 13,300 atmospheres 9. In a closed container, Gas1 exerts a pressure of 0.70 atm, gas2 exerts a pressure of 0.50 atm, and gas3 exerts a pressure of 0.60 atm. What is the total pressure of the mixture of the three gases? 2

#20 The total pressure exerted by a mixture of He, Ne, and Ar gases is 2.00 atm. Using daltons law of partial pressures, what is the partial pressure, in atmospheres, of Ne given that the partial pressures of the other gases are both 0.43 atm