Molarity

• How Many Milligrams of Caffeine Are in a 1 mM Solution?
  A 1 mM caffeine solution contains about 194.2 mg per liter, not 194.2 mg total; multiply by the volume in liters to find the mass.
• How to Convert g/L to mol/L
  Convert a mass concentration in g/L to mol/L by dividing by the solute’s molar mass; see the formula, units, and a worked example.
• How Do Molarity and Molality Depend on Temperature?
  Molarity usually falls as a solution warms because its volume expands; molality stays constant if the masses of solute and solvent remain unchanged.