Gas Laws

2.)The air pressure inside a submarine is 0.62 atm. What would be the height of a column of mercury balanced by this pressure?

0.62 X 760 = 471.2 mm Hg > 470 mm Hg

3.) The weather news gives the atmospheric pressure as 1.07 atm. What is this atmospheric pressure in mm Hg?

1.07 X 760 = 813 mm Hg

6.)The same bag of potato chip from problem 5 is shipped to a town in Colorado, where the atmospheric pressure is 99.82 kpa. What is the difference between the pressure in the bag and the atmospheric pressure of the town in pa?

101500 - 9982 = 1680 pa

1.)The air pressure for a certain tire is 109 kPa. What is this pressure in atmospheres?

109/101.3 = 1.08 atm

13.)The U-tube of a manometer is 26.4 cm tall. With both ends open, it is filled until the mercury level in each tube is 13.2 cm from the top. What is the largest difference in pressure this manometer can measure in units of mm Hg?

26.4 cm > 264 mm Hg

8.)The pressure in the tire of an automobile is 34.8 lb/in^2 . What is the pressure in kpa?

34.8/14.7 = 2.37 2.37 x 101.3 = 240. kpa

7.) The pressure gauge on a compressed air tank reads 43.2 lb/in^2 . What is the pressure in atm?

43.2/14.7 = 2.94 atm

9.)A gas container is fitted with a manometer. The level of the mercury is 15 mm lower on the open side. Using a laboratory barometer, you find that the atmospheric pressure is 750 mm Hg. What is the pressure, in atm, of the gas in the container?

750 - 15 = 735 735/760 = .970 atm

4.) An experiment at Sandia National Labs in New Mexico is performed at an atmospheric pressure of 758.7 mm Hg. What is this pressure in atm?

758.7/760 =.9983 atm

15.) One end of an open-ended manometer is connected to a canister of an unknown gas. The atmospheric pressure is 1.03 atm. The mercury level is 18.6 mm higher in the U-tube on the side open to the atmosphere than on the side attached to the canister. What is the pressure of the gas in mm Hg?

760 x 1.03 = 782.8 782.8 + 18.6 =801.4 mm Hg

5.) A bag of potato chips is sealed in a factory near sea level. The atmospheric pressure is 761.3 mm Hg. The pressure inside the bag is the same. What is the pressure in the bag in pa?

761.3/760 = 1.00171 1.00171x 101.3 = 101.5 pa > 101500 kPa

12.)Suppose you are measuring the pressure inside a sealed cabinet using an open-ended manometer. The atmospheric pressure is 762.4 mm Hg. If the mercury level on the side open to the atmosphere is 3.6 mm higher than on the side attached to the cabinet, what is the pressure inside the cabinet in units of kpa?

762.4 + 3.6 = 766 766 /760 =1.008 1.008 x 101.3 = 102.1 kpa

10.) A soccer ball is attached to an open-ended manometer. The mercury level in the manometer is 10 mm higher on the side attached to the ball than on the side open to the atmosphere. Atmospheric pressure has already been determined to be 770 mm Hg. What is the gas pressure in the ball?

770 - 10 = 760 mm Hg

11.)One end of n open-ended manometer is connected to a canister filled with a gas at a pressure of 771.0 mm Hg. The mercury level on the side open to atmosphere is 11.2 mm higher than on the side attached to the cabinet, what is the atmospheric pressure in mm Hg?

771.0 -11.2 = 759.8 mm Hg

14.)A manometer contains a sample of nitrogen gas at a pressure of 88.3 kpa. The level of mercury in the U-tube is 12.8 mm lower on the end open to the atmosphere. What is the atmospheric pressure in kpa?

88.3/101.3 = 0.871668 0.871668 x 760 = 662.47 662.47+ 12.8 = 675 675 /760 = .88 x 101.3 = 90. kpa