Molar masses of salutes are best measured from osmetic pressure. Why?

Explanation

To answer the question "Why are molar masses of solutes best measured from osmotic pressure?", we can break down the reasoning into clear steps:

### Step-by-Step Solution:

1. **Understanding Osmotic Pressure**:
Osmotic pressure is the pressure required to stop the flow of solvent into a solution through a semipermeable membrane. It is a colligative property that depends on the concentration of solute particles in a solution.

2. **Definition of Molarity and Molality**:
...