Molality

Molality is a measure of concentration and is the number of moles of solute in 1 kilogram of solvent.

• Defined as moles/kg
• Units are "m"
  
  • The unit must be lower case.

Steps for calculating molality:

1. Convert the solutes mass into moles.
   
2. Divide the number of moles of the solute by the number of kg of the solvent.
3. ​Ensure proper units are used.
   

​Watch the following video from 0:00 to 2:10:

https://youtu.be/uj1u7Nx9JUc

Molarity Vs Molality

To learn about the difference between molarity and molality, watch the following video:

https://youtu.be/96oNrVnTk50