Revision Zone Fill in the blanks. 1. When the velocity of gas molecules increases, their kinetic energy (increases/decreases). 2. Atmospheric pressure is measured using - B. The length of the mercury column at sea level is With (increase/decrease) in altitude, atmospheric pressure decreases (manometer/barometer). (760 mm/760 cm
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1.If the temperature is increased, the average speed and kinetic energy of the gas molecules increase. If the volume is held constant, the increased speed of the gas molecules results in more frequent and more forceful collisions with the walls of the container, therefore increasing the pressure (Figure 1).
2.14.70 pounds per square inch
Standard sea-level pressure, by definition, equals 760 mm (29.92 inches) of mercury, 14.70 pounds per square inch, 1,013.25 × 103 dynes per square centimetre, 1,013.25 millibars, one standard atmosphere, or 101.325 kilopascals
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