Molecular Weight Calculator

Calculate Molecular Weight with Precision

ChemistryCalculatorHub.info

Molecular Weight Calculator

Calculate the molecular weight of any chemical compound.

Molecular Weight: - g/mol

Mass Calculator

Calculate mass needed for a specific number of moles.

Mass needed: - g

Understanding Molecular Weight

What is Molecular Weight?

Molecular weight (MW) is the sum of the atomic weights of all atoms in a molecule. It's expressed in atomic mass units (amu) or g/mol.

Calculation Method

To calculate molecular weight:

  • Identify all atoms in the molecule
  • Count the number of each atom
  • Multiply by respective atomic weights
  • Sum all values

Applications

Molecular weight is crucial for:

  • Stoichiometric calculations
  • Solution preparation
  • Gas density calculations
  • Chemical analysis

Common Examples

Some common molecular weights:

  • H2O (Water): 18.015 g/mol
  • CO2 (Carbon dioxide): 44.009 g/mol
  • NaCl (Table salt): 58.443 g/mol
  • C6H12O6 (Glucose): 180.156 g/mol