How Does Mercury's Density Affect Column Pressure in hPa?

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SUMMARY

The pressure of a 10 cm high column of mercury, with a density of 13.6 g/cm³, can be calculated using the formula Pressure = pgh, where p is the density, g is the acceleration due to gravity (9.81 m/s²), and h is the height in meters. The resulting pressure is expressed in hectopascals (hPa), where 1 hPa equals 100 pascals (Pa). The discussion clarifies that 'g' in the density unit refers to grams, not the gravitational acceleration.

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teng125
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What is the pressure of a 10 cm high column of mercury
(ρ = 13,6 g/cm^3) in hPa?

i know that the formula is Pressure=pgh so i subs in 13.6g/cm^3 (9.81m/s^2) (10cm).
may i know what is the g in 13.6g/cm^3 belongs to??

is it equals to 9.81m/s^2??
and also what is hPa??i know Pa is pascal but don't know h

anybody pls help
thanx
 
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hPa is 10^2, so 100 times a Pa. And assume g is 9.81ms^-2. I'm not sure what you mean "what the 'g' in 13.6g/cm^3 belongs to" question, but g is not a variable in there, it's an indication that the density is in grams per centimeter cubed, so keep the units in centimeters and grams, and the answer should be ok.

Levi
 
Last edited:

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