How high would the level be in an alcohol barometer at a pressure of 0.72atm? the density of alcohol is 0.79×103kg/m3, and 1atm=1.013×105n/m2?

P = pressure level as measured by the barometer = 0.72 atm = 0.72 x 1.013 x 10⁵ N/m² = 7.3 x 10⁴ N/m²                     (Since 1 atm = 1.013 x 10⁵ N/m²)

ρ = density of alcohol inside the barometer = 0.79 x  10³ kg/m³

g = acceleration due to gravity = 9.8 m/s²

h = height of level of alcohol in barometer = ?

Pressure level is given as

P = ρ g h

inserting the values

7.3 x 10⁴ N/m² = (0.79 x  10³ kg/m³) (9.8 m/s²) h

h = (7.3 x 10⁴ N/m²) /((0.79 x  10³ kg/m³) (9.8 m/s²))

h = 9.43 m

your answer would be “dry”

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