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At an atmospheric pressure of 745 mm Hg, what is the pressure of He gas inside a cylinder that is attached to an open-end manometer in which the level of mercury in the open side of the manometer is 25 mm Hg higher than the side that is attached to the gas cylinder?

Respuesta :

sarajanethp

Answer:

770 mmHg

Explanation:

For definition mmHg is a unit of medition of pressure equivalent to the pressure exerted by a column of mercury 1 millimeter high at 0°C and under the acceleration of gravity

So, If the level of mercury on the open side of the pressure gauge is 25 mm Hg higher than the side connected to the gas cylinder, 25mm Hg must be added to the atmospheric pressure

745mm Hg +25mmHg =770mmHg

Lanuel

The pressure of He gas inside a cylinder that is attached to an open-end manometer is 770 mm Hg.

Given the following data:

  • Atmospheric pressure = 745 mm Hg
  • Pressure (open side) = 25 mm Hg

To find the pressure of He gas inside a cylinder that is attached to an open-end manometer:

A manometer can be defined as a measuring device that is similar to a barometer and as such can be use to measure the pressure of a gas that is trapped in a container e.g He gas in a cylinder.

Generally, there are two (2) main types of manometer and these include:

  • Close-end manometer.
  • Open-end manometer.

[tex]Total\;pressure = Atmospheric \;pressure + Pressure (side)\\\\Total\;pressure = 745 + 25[/tex]

Total pressure = 770 mm Hg

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