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a closed end manometer was constructed from a u-shaped glass tube which was 80.0 cm high. it was loaded with mercury so that the closed side was filled all the way to the top (80.0 cm above the neck) while the open end was at a level 18.0 cm above the neck. it was taken into a chamber used for training astronauts. what is the highest pressure, in torr, that can be read on this manometer? a. 62.0 torr b. 62.5 torr c. 98.0 torr d. 98.5 torr e. 620. torr

Respuesta :

The highest pressure which can be read in the closed-end glass manometer is given by option e 620 torr

At the highest pressure, the height of mercury in the closed end will be 80 cm. The height of mercury in the open end will be 18 cm. The pressure read on the manometer = pressure exerted be difference in heights of mercury in the closed end manometer = 80-18 cm of mercury = 62 cm of mercury= 62 cm of Hg

62 cm of Hg = 620 mm of Hg

We know that 1 mm Hg = 1 Torr.

Therefore 620 mm Hg = 620 Torr. answer

Thus the answer for the highest pressure that can be read in torr on this manometer is option e which is 620 torr

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