Calculators

Calculates the number of molecules in a given number of moles using Avogadro's number.

Determines the electron configuration and number of valence electrons for a given element based on its atomic number.

Calculates the number of protons, neutrons, and electrons in an atom based on its atomic number and mass number. Assumes a neutral atom unless the charge is specified.

Calculates the activity coefficient of an ion in a solution using the Debye-Hückel equation or its extended versions.

Calculates the atomic mass of an atom based on the number of protons and neutrons, displaying the result in atomic mass units (amu)

Calculates the percentage by mass of each element in a chemical compound.