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11 Dec 2019

A flask containing neon gas is connected to an open-ended mercury manometer. The open end is exposed to the atmosphere, where the prevailing pressure is 745 mmHg. The mercury level in the open arm is 50 mm above that in the arm connected to the flask of neon. What is the neon pressure? A) 695 mmHg B) 50. mmHg C) 795 mmHg D) 745 mmHg

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13 Dec 2019

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An open-end manometer containing mercury is connected to a container of gas, as depicted in Sample Exercise 10.2. What is the pressure of the enclosed gas in torr in each of the following situations? (a) The mercury in the arm attached to the gas is 15.4 mm higher than in the one open to the atmosphere; atmospheric pressure is 0.985 atm. (b) The mercury in the arm attached to the gas is 12.3 mm lower than in the one open to the atmosphere; atmospheric pressure is 0.99 atm.

The atmospheric pressure is greater than the gas pressure, and the P_gas is

b) In this case, P_gas is greater than P_atm.

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An open manometer is filled with mercury and connected to a container of hydrogen gas. The mercury level is higher in the arm of the tube connected to the hydrogen. If atmospheric pressure is , what is the pressure of the hydrogen gas, in atmospheres?

1. When an open-end manometer is attached to a tank of gas in which the pressure is 1.030 atm which of the following will be observed if the barometric pressure is 0.980 atm? (Conversion factor: 1 atm = 760 torr)

a.The mercury level in the open arm of an open-end manometer will be 19 mm above a reference point.

b.The mercury level in the open arm of an open-end manometer will be 38 mm above a reference point.

c.The mercury level in the arm connected to a tank of gas will be 19 mm above a reference point.

d.The mercury level in the open arm of an open-end manometer will be 38 mm below a reference point.

e.The mercury level in the arm connected to a tank of gas will be 38 mm below a reference point.

2. A 15.0 L bulb containing Ar at 5.0 atm and a 22.0 L bulb containing Kr at 7.0 atm are connected by a stopcock. What will be the partial pressure of Ar in the mixture when the stopcock is opened and gases are allowed to mix at a constant temperature?

a.4.9 atm b.2.0 atm c.5.0 atm d.3.0 atm e.0.41 atm

3. A gaseous mixture contains equal masses of CO2, CO, N2, and O2. If the total pressure of the mixture is 1.00 atm what can be said about partial pressures?

a.Partial pressures of all gases are equal to 0.25 atm.

b.Partial pressure of N2 is smaller than partial pressure of O2.

c.Partial pressure of O2 is greater than partial pressure of CO.

d.Partial pressure of CO is more than 0.25 atm

e.Partial pressure of CO2 is greater than 0.25 atm.

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