Apressure that will support a column of hg to a height of 256mm would support a column of water to what height? the density of mercury is 13.6 g/cm3; the density of water is 1.00g/cm3.
a. 348cm
b. 1.00 ´ 102 ft
c. 18.8mm
d. 33.8ft
e. 76.0 cm

Option (A) is the correct answer.

Explanation:

It is known that relation between pressure, density, height, and gravity is as follows.

               P =

As it is given that pressure of both mercury and water column are equal. Therefore,

Cancelling the common terms in the formula. Now, putting the given values into the above formula as follows.

            3481.6 mm =

As 1 mm = 0.1 cm

            = 348.1 cm

or,        = 348 cm (approx)

thus, we can conclude that height of the given column is 348 cm.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.