What is the pressure of 76 cm of mercury?

We know that the pressure 76 cm of mercury is equal to one atmospheric pressure.

What mean by the statement the atmospheric pressure at a place is 76 cm of mercury state its value in PA?

The statement ‘the atmospheric pressure at a place is 76 cm of Hg’ means that the atmospheric pressure at that place is equal to the pressure due to mercury column of height 76 cm . The value of 76 cm of Hg = 1.013 x 105 Pa.

How do you find atmospheric pressure with mercury?

Atmospheric pressure is the pressure caused by the mass of our gaseous atmosphere. It can be measured using mercury in the equation atmospheric pressure = density of mercury x acceleration due to gravity x height of column of mercury.

What is the pressure exerted by 76 cm of mercury column?

Under normal atmospheric pressure, the mercury column shows a height of 76cm. Gravitational force of the earth is responsible for the decreasing atmospheric pressure with increasing altitude. Hence, the pressure exerted by a 76cm high column of mercury is equal to 1 atmospheric pressure.

What does 760 mmHg represent?

Standard atmospheric pressure is called 1 atm of pressure and is equal to 760 mmHg and 101.3 kPa. Atmospheric pressure is also often stated as pounds/square inch (psi). The atmospheric pressure at sea level is 14.7 psi. It is important to be able to convert between different units of pressure.

What is the value of 76 cm of Hg in Pascal?

76 cm of Hg pressure is equivalent to 76 pascal.

What is meant by the statement that was ferric pressure at a place is 76 cm of Hg?

The surface of the reservoir is open to the atmosphere. Thus when said atmospheric pressure is 76 cm of Hg at a place it means that the mercury level in the sealed tube is at 76 cm,which is the normal air pressure at the mean sea level.

What is the value of atmospheric pressure in cm of Hg?

Therefore, we can say that; at standard sea-level conditions, the atmospheric pressure is equal to 76 cm of Hg column.

What is the pressure of mercury?

The pressure of Mercury’s atmosphere was determined to be about 10−12 bar (compared to the 1 bar atmospheric pressure at sea level on Earth). Ground-based telescopic observations in the visible region have identified resonant scattering emission features attributed to sodium and potassium and calcium as well.

Why is mercury measured in pressure?

Mercury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure. A barometer using water, for instance, would need to be 13.6 times taller than a mercury barometer to obtain the same pressure difference.

Why is the height of mercury column nearly 76 cm in the tube?

Air pressure is the weight of air in the atmosphere above the reservoir (bowl of mercury). So, the level of mercury continues to changes until the weight of mercury in the glass tube is exactly equal to weight of the air above the reservoir, which is 76 cm.