# Problem: A diagram for an open-tube manometer is shown below.If the flask is open to the atmosphere, the mercury levels are equal. For each of the following situations where a gas is contained in the flask, calculate the pressure in the flask in torr, atmospheres, and pascals.a. If the open-tube manometer in contains a nonvolatile silicone oil (density = 1.30 g/cm3) instead of mercury (density = 13.6 g/cm3), what are the pressures in the flask in torr, atmospheres, and pascals?

###### FREE Expert Solution

We’re being asked to determine the pressures in the flask in torr, atmospheres, and pascals, if the open-tube manometer in contains a nonvolatile silicone oil.

A manometer allows you to determine the pressure of a gas (Pgas) sample by using the atmospheric pressure (Patm) and the difference in the height of mercury (h).

When Patm is pushing harder than  Pgas

$\overline{){{\mathbf{P}}}_{\mathbf{g}\mathbf{a}\mathbf{s}}{\mathbf{=}}{{\mathbf{P}}}_{\mathbf{a}\mathbf{t}\mathbf{m}}{\mathbf{-}}{\mathbf{h}}}$

From the illustration given, the atmospheric pressure (Patm) pushing the silicone mercury harder than the pressure of the gas (Pgas) giving a height difference of 118 mmHg.

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###### Problem Details

A diagram for an open-tube manometer is shown below.

If the flask is open to the atmosphere, the mercury levels are equal. For each of the following situations where a gas is contained in the flask, calculate the pressure in the flask in torr, atmospheres, and pascals.

a. If the open-tube manometer in contains a nonvolatile silicone oil (density = 1.30 g/cm3) instead of mercury (density = 13.6 g/cm3), what are the pressures in the flask in torr, atmospheres, and pascals?