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the height of the mercury in the right arm open to atmospheric pressure (760 mmhg) is 100 mm and the height in the left arm is 120 mm. 120 mm 100 mm gas what is the pressure of the gas in the bulb? (a)20 mmhg (b)640 mmhg (c)740 mmhg (d)780 mmhg

Respuesta :

Eduard22sly

The pressure of the gas in the bulb, given that height in the right arm is 100 mm and the left arm is 120 mm, is 740 mmHg (Option C)

How do I determine the pressure of the gas?

From the question given above, the following data were obtained:

  • Atmospheric pressure = 760 mmHg
  • Pressure due to height in right arm = 100 mmHg
  • Pressure due to height in left arm = 120 mmHg
  • Pressure due to difference in height = 120 - 100 = 20 mmHg
  • Presure of gas =?

The pressure of the gas in the bulb can be obtained as shown below:

Pressure of gas = Atmospheric presure - Pressure due to difference in height

Pressure of gas = 760 - 20

Pressure of gas = 740 mmHg

Thus, we can conclude from the calculation made above that the pressure of the gas is 740 mmHg (Option C)

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