barometers

• 6 mm

• 17 mm

• 21 mm

• 167 mm

If the pressure of a contained gas in a tank is 2.3 atm, then its pressure in centimeters of mercury is ….……..

• 141.8 cmHg

• 33 cmHg

• 174.8 cmHg

• 93.1 cmHg

• 1.29

• 1.23

• 1.27

• 1.25

• 1/6

• 6/1

• 1/1

• 1/36

• 70 cmHg

• 57 cmHg

• 84 cmHg

• 87 cmHg

• 10.13 m

• 76 m

• 13.16 m

• 100 m

A barometer is placed on a high cliff. If the barometer is lowered and placed on the ground, the length of the Torricellian vacuum will ……..

• increase

• decrease

• stay the same

• can’t be indeterminate

If the pressure of a contained gas in a tank is 2.3 atm, then its pressure in centimeters of mercury is ….…….. Let =76 cmHg

• 141.8 cmHg

• 33 cmHg

• 174.8 cmHg

• 93.1 cmHg

A torr is a unit that is defined as being equal to the pressure produced by 1 mm of mercury. What is the pressure measured in Pascals? Give your answer to three significant figures.