Molecular Mass Formula:
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Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a molecule.
The calculator uses the molecular mass formula:
Where:
Explanation: The calculator parses the chemical formula, identifies each element and its count, then multiplies by the corresponding atomic mass and sums all contributions.
Details: Molar mass is fundamental in chemistry for stoichiometric calculations, preparing solutions, determining empirical and molecular formulas, and understanding chemical reactions.
Tips: Enter the chemical formula using standard notation (e.g., H2O for water, C6H12O6 for glucose). Use uppercase for the first letter of element symbols and lowercase for the second letter if applicable.
Q1: What is the difference between molecular mass and molar mass?
A: Molecular mass is the mass of a single molecule in atomic mass units (amu), while molar mass is the mass of one mole of molecules in grams per mole (g/mol). Numerically they are equal but have different units.
Q2: How accurate is this calculator?
A: The calculator uses standard atomic masses from the periodic table. For most educational and general purposes, it provides sufficient accuracy.
Q3: Can I calculate molar mass for ionic compounds?
A: Yes, the same principle applies. Enter the formula as you would for any chemical compound (e.g., NaCl for sodium chloride).
Q4: What if my element is not in the database?
A: The calculator includes common elements. For less common elements, you may need to use more specialized tools or reference materials.
Q5: Why is molar mass important in stoichiometry?
A: Molar mass allows conversion between mass and moles, which is essential for calculating reactant quantities, product yields, and understanding reaction proportions.