Everything else (temperature, atmospheric pressure, environment) being the same, the only factor you need to consider is the (relative) densities of H2O and Hg.
The density of water = 1 g.cm-3 at T=20oC and 1 standard atm.
The density of Hg = 13.5 g.cm-3.
Hence, the pressure for a column of H2O 40 cm high in vacuum is the same as that for a column made of 40 [cm] / 13.5 = 2.96 cm of liquid Hg in vacuum.
* Note that the atmospheric pressure is indicated by the height of the liquid in an inverted tube (open-end facing down) with a (partial) vacuum at the top of the tube.
=====================
To convert from cm H2O to mm Hg, you can use the conversion factor 1 cm H2O = 0.7356 mm Hg. Therefore, 15 cm H2O is equivalent to 15 cm H2O * 0.7356 mm Hg/cm H2O ≈ 11.03 mm Hg.
Liquid mercury is a pure element its formula is Hg.
The symbol for helium is He. The symbol for mercury is Hg.
Mercury (I) Hydroxide Hg OH2 (2 is subscript) Mercury(II) Hydroxide Hg (OH)2
To convert inches of mercury (in Hg) to millimeters of mercury (mm Hg), you multiply by 25.4. So, 24.9 in Hg * 25.4 mm/in = 632.46 mm Hg.
water(H2O), mercury(Hg).
To convert millimeters of water (mm H2O) to millimeters of mercury (mm Hg), you can use the conversion factor of 1 mm H2O = 0.73556 mm Hg. Simply multiply the value in mm H2O by 0.73556 to obtain the equivalent value in mm Hg.
To convert from cm H2O to mm Hg, you can use the conversion factor 1 cm H2O = 0.7356 mm Hg. Therefore, 15 cm H2O is equivalent to 15 cm H2O * 0.7356 mm Hg/cm H2O ≈ 11.03 mm Hg.
Hg is the chemical symbol for mercury
Hg is Mercury's symbol
Liquid mercury is a pure element its formula is Hg.
1 millimeter of mercury (mm Hg) is equivalent to 133.322 pascals.
Among the given substances, Hg (mercury) has the greatest surface tension due to its strong intermolecular forces and cohesive properties. Mercury's atoms are closely packed, which leads to high surface tension compared to methane (CH4), water (H2O), and hydrogen sulfide (H2S).
There are 25,400 microns in 1 inch of mercury (Hg).
Hg is the chemical symbol of mercury.
Mercury
No Hg, or mercury is an element, but it is not molecular.