A solution prepar

To calculate osmotic pressure, we know that,

[As, n = ]

Here, π is the osmotic pressure

n = Number of moles of solute

w = Weight of solute

M = Molecular mass of solute

R = Gas constant = 0.0821 L atm K^–1mol^–1

t = Temperature

Given,

V = 35ml. = L

T = 298K.

π = 0.335torr. = atm.

w = 8.95×10^-3gm.

So,

M = (8.95×10^-3 × 0.0821 × 298 ×760 × 1000) / (0.335 × 35)

∴ M = = 1.42×10⁴ gm.

So, the molar mass is 1.42×10⁴ gm.