# What Is The Pressure Of The Gas In This Mercury Manometer

Contents

852 mmHg

## What is the pressure of the gas in this mercury manometer if H 49 mm and atmospheric pressure is 769 mmHg?

Question: pling What is the pressure of the gas in this mercury manometer if h 49 mm and atmospheric pressure is 769 mmHg? Number 883 mmHg There is a hint available!

## What is the pressure of mercury gas?

Mercury has a very tenuous and highly variable atmosphere (surface-bound exosphere) containing hydrogen helium oxygen sodium calcium potassium and water vapor with a combined pressure level of about 1014 bar (1 nPa). The exospheric species originate either from the Solar wind or from the planetary crust.

## How do you find the pressure of a gas?

If volume and temperature are held constant the ideal gas equation can be rearranged to show that the pressure of a sample of gas is directly proportional to the number of moles of gas present: P=n(RTV)=n×const.

## What is the pressure in the gas chamber of the manometer?

1.38 bar

Open end mercury manometer is connected to a gas chamber containing gas at a pressure of 1.38 bar. The barometric pressure is 750 mm Hg.

## How does a manometer measure the pressure of a sample of gas?

A manometer is a device that measures air pressure using a container with a “U”-shaped tube open at one or both ends. In a closed manometer a sample of gas is introduced into one end which is then capped. … This pressure represents the positive or negative difference between the gas pressure and atmospheric pressure.

## What is the pressure of the gas in tube?

Therefore the pressure exerted by gas in 10 mm of Hg is 0.0135 atm.

## What is the pressure of the gas in this mercury manometer if H 71 mm and atmospheric pressure is 785 mmHg?

Thus the pressure of the gas in a mercury manometer is 852 mmHg.

## What is gas law chemistry?

gas laws laws that relate the pressure volume and temperature of a gas. … These two laws can be combined to form the ideal gas law a single generalization of the behaviour of gases known as an equation of state PV = nRT where n is the number of gram-moles of a gas and R is called the universal gas constant.

## How does a mercury manometer work?

(See open-end manometer in diagram). The liquid mercury is equalized in the two sides of the tube at atmospheric pressure. When the gas is added it will exert pressure on the mercury on the other side. If the pressure of the gas is equal to atmospheric pressure the mercury will remain at the same levels on both sides.

## What is the pressure of gas?

The pressure of a gas is the force that the gas exerts on the walls of its container. When you blow air into a balloon the balloon expands because the pressure of air molecules is greater on the inside of the balloon than the outside. Pressure is a property which determines the direction in which mass flows.

## What is gas pressure class 8?

The pressure of a gas is the stress on the walls of its container that the gas exerts. The envelope opens as you blast air into a balloon so the pressure of the air molecules on the interior of the balloon is higher than on the outside.

## Why mercury is used in barometer?

Mercury is employed in the barometer because its density is sufficiently high for a relative short column to be obtained. and also because it has very small vapour pressure at normal temperature. High density scales down the pressure head(h) to repesent same magnitude of pressure in a tube of smaller height.

## What is mercury barometer?

A mercury barometer is a barometer with a column of mercury whose height varies according to the atmospheric (barometric) pressure. A barometer is an instrument for measuring atmospheric pressure which is used in forecasting the weather.

## Does a manometer contain mercury?

Mercury manometer

The U tube manometer uses mercury as the manometer liquid as it is of very high density and very shiny in appearance. One arm of the U tube manometer is connected to the vessel or pipe in which the pressure has to be measured and the other arm is kept open to the atmosphere.

## How is natural gas pressure measured?

How do you measure the gas pressure? You will need an instrument called a Manometer. This tool allows you to measure the pressure of gas in the system. Manometers are available that measures a specific range of pressure in inches of water column or pounds per square inch.

## What does Graham’s law say?

the principle that at a given temperature and pressure the rate of diffusion of a gas is inversely proportional to the square root of its density.

## How do we measure pressure?

Pressure is typically measured in units of force per unit of surface area ( P = F / A). … One pascal is the force of one Newton per square meter acting perpendicular on a surface. Other commonly used pressure units for stating the pressure level are psi (pounds per square inch) and bar.

## Which of the following pairs of variables are inversely proportional?

Boyle’s law states that pressure (P) and volume (V) are inversely proportional. Charles’ law states that volume (V) and temperature (T) are directly proportional.

## What volume will a gas occupy at 740 mm pressure?

1000 cc

Thus the volume of gas occupied at a pressure of 740 mm is 1000 cc.

See also effects determine how slide elements first appear on a slide

## What gas occupies 22.4 at STP?

oxygen gas

One mole of oxygen gas occupies 22.4 l volume at STP.

## What is the relationship between volume and pressure of a gas?

More collisions mean more force so the pressure will increase. When the volume decreases the pressure increases. This shows that the pressure of a gas is inversely proportional to its volume.

## What should the gas pressure be on a propane furnace?

Propane fired systems should have an input pressure of 11.3 inches of water column (not psi) to a maximum of 14 inches.

## What should the gas pressure be in my home?

Gas Main Pressure

The natural gas pressure of the gas line leading to the home ranges from approximately 1/4 psi to 60 psi depending on the number of homes or businesses served by the line.

## How does a gas manometer work?

In its simplest form the manometer is a U-tube about half filled with liquid. … When positive pressure is applied to one leg the liquid is forced down in that leg and up in the other. The difference in height “h ” which is the sum of the readings above and below zero indicates the pressure.

## Do pressure gauges contain mercury?

Mercury-Containing Pressure and Other Gauges

Devices that measure pressure may contain mercury. Barometers manometers and vacuum gauges all have a gauge for reading air pressure. Liquid mercury in the gauges responds to air pressure in a precise way that can be read on a calibrated scale.

## Does a manometer measure static pressure?

To measure total pressure in the duct the manometer is connected as shown on the right of Figure 11. This gauge measures the force of static pressure and velocity pressure which is the total pressure. … On one side of the manometer static pressure is exerting its force on the fluid column.

## Why is gas pressure?

Gas pressure is caused when gas particles hit the walls of their container. The more often the particles hit the walls and the faster they are moving when they do this the higher the pressure.

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