A gas is equilibrium has uniform density and pressure throughout its volume. This is strictly true only if there are no external influences. A gas column under gravity for example does not have uniform density (and pressure). As you might expect, its density decreases with height. The precise independence is given by the so called law of atmospheres n_2=n_1 exp[-mg(h_2-h_1)//K_BT] where n_2, n_1 refer to number density at heights h_2 and h_1 respectively. Use this relation to derive the equation for sedimentation equilibrium of a suspension in a liquid column: n_2=n_1exp[-mgN_A(p-p')(h_2-h_1)//(pRT)] where p is the density of the suspended particle and p' that of the surrounding medium [N_A is Avogadro's number and R the universal gas constant ]

A gas is equilibrium has uniform density and pressure throughout its v

1.	A gas is equilibrium has uniform density and pressure throughout its volume. This is strictly true only if there are no external influences. A gas column under gravity for example does not have uniform density (and pressure). As you might expect, its density decreases with height. The precise independence is given by the so called law of atmospheres n_2=n_1 exp[-mg(h_2-h_1)//K_BT] where n_2, n_1 refer to number density at heights h_2 and h_1 respectively. Use this relation to derive the equation for sedimentation equilibrium of a suspension in a liquid column: n_2=n_1exp[-mgN_A(p-p')(h_2-h_1)//(pRT)] where p is the density of the suspended particle and p' that of the surrounding medium [N_A is Avogadro's number and R the universal gas constant ]
Answer» SOLUTION :USE Archimedes principle to FIND the apparent weight of the SUSPENDED PARTICLE.