# Solution

- Chemistry - Normality - Normality is used to express the concentration of reactive species in a solution in chemistry. Learn how to calculate normality with this handy calculator.
- Molality - Molality is used to calculate the concentration of a solute in a solution without being affected by temperature or pressure changes, useful in colligative property studies.
- Molarity (Molar Concentration) - Molarity, denoted by M, is a key metric in chemistry that measures the concentration of a solute in a solution. Calculate it using the formula: M = moles of solute / volume of the solution in liters.
- pH Calculation of a Solution - The pH calculation of a solution is determined by taking the negative base 10 logarithm of the concentration of hydronium ions. This is key for chemistry and biology.