molality = Molarity÷(density of solution-Molarity×Molecular weight of solute)m = M/[d-(M×W)]All in SI units.

Molality vs Molarity
Molality and molarity are both measures of concentration, but they differ in how they are calculated and what they represent.

Molality
- Molality is defined as the number of moles of solute per kilogram of solvent.
- It is represented by the symbol "m" and is calculated using the formula:
molality (m) = moles of solute / kilograms of solvent.
- Molality is temperature independent, as it is based on the mass of solvent rather than the volume.
- It is commonly used in colligative properties calculations, as it takes into account the solvent mass.

Molarity
- Molarity is defined as the number of moles of solute per liter of solution.
- It is represented by the symbol "M" and is calculated using the formula:
molarity (M) = moles of solute / liters of solution.
- Molarity is temperature dependent, as it is based on the volume of the solution.
- It is commonly used in chemical reactions and dilution calculations, as it relates to the volume of the solution.

Relation between Molality and Molarity
- The relationship between molality and molarity is influenced by the density of the solvent.
- As the temperature changes, the volume of the solvent changes, affecting the molarity, while the mass of the solvent remains constant, keeping the molality unchanged.
- The conversion between molality and molarity involves the density of the solvent, as density is the ratio of mass to volume.
- To convert from molality to molarity, the density of the solvent must be known, as molarity depends on volume.
- The relationship between molality and molarity is important in understanding concentration units and their applications in various chemical calculations.