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Molar 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 a fundamental property in chemistry that relates the mass of a substance to the number of particles it contains.
The molar mass is calculated using the formula:
Where:
Explanation: To calculate the molar mass of a compound, sum the products of the atomic masses of each element multiplied by their respective counts in the chemical formula.
Details: Molar mass is essential for converting between mass and moles, determining empirical and molecular formulas, calculating solution concentrations, and understanding stoichiometry in chemical reactions.
Tips: Enter elements in the format "Symbol:Count" separated by commas (e.g., "H:2,O:1" for water). Use standard chemical symbols and ensure counts are positive numbers.
Q1: What's 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 or molecules (in g/mol).
Q2: How do I find the atomic mass of an element?
A: Atomic masses are found on the periodic table. Our calculator uses standard values from the IUPAC recommended atomic weights.
Q3: Why are atomic masses not whole numbers?
A: Atomic masses account for the natural abundance of isotopes. They are weighted averages of all naturally occurring isotopes of an element.
Q4: How do I calculate molar mass for hydrates?
A: Include water molecules in your calculation. For example, for CuSO₄·5H₂O, you would calculate Cu:1, S:1, O:9, H:10.
Q5: Can this calculator handle complex formulas?
A: Yes, as long as you break down the formula into individual elements with their counts. For example, Ca₃(PO₄)₂ would be entered as "Ca:3,P:2,O:8".