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Molar Mass Formula:
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Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a chemical formula, multiplied by their respective stoichiometric coefficients.
The calculator uses the molar mass formula:
Where:
Explanation: The formula calculates the total mass of one mole of a compound by multiplying each element's atomic mass by its count in the formula and summing all products.
Details: Molar mass is fundamental in chemistry for converting between mass and moles, determining empirical and molecular formulas, calculating solution concentrations, and stoichiometric calculations in chemical reactions.
Tips: Enter atomic masses as comma-separated values (e.g., "12.01,1.008,16.00" for carbon, hydrogen, oxygen) and stoichiometry as comma-separated integers (e.g., "1,2,1" for CH₂O). Ensure both lists have the same number of elements.
Q1: What is the difference between atomic mass and molar mass?
A: Atomic mass is the mass of a single atom (usually in amu), while molar mass is the mass of one mole of atoms/molecules (in g/mol).
Q2: How do I find atomic masses for elements?
A: Atomic masses are found on the periodic table. Common values include C=12.01, H=1.008, O=16.00, N=14.01 g/mol.
Q3: What is stoichiometry in this context?
A: Stoichiometry refers to the number of atoms of each element in the chemical formula (subscripts in the formula).
Q4: Can this calculator handle polyatomic ions?
A: Yes, simply include the atomic masses and stoichiometry for all atoms in the polyatomic ion as part of the calculation.
Q5: Why is molar mass important in stoichiometry?
A: Molar mass allows conversion between mass and moles, which is essential for calculating reactant and product quantities in chemical reactions.