What is molality and how is it different from molarity? 

Molality is the number of moles of solute per kilogram of solvent, while molarity is the number of moles of solute per liter of solution.

Molality is the number of moles of solute per liter of solvent, while molarity is the number of moles of solute per kilogram of solvent.

Both molality and molarity are measures of concentration that are dependent on temperature.

Molality and molarity are the same thing and can be used interchangeably.