Mole & Molar Mass Calculator
Calculate moles, mass, and molar mass.
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What is Mole & Molar Mass?
A mole is a fundamental unit in chemistry representing Avogadro's number (6.022 × 10²³) of particles. Molar mass is the mass of one mole of a substance.
These concepts are essential for converting between the microscopic world of atoms and the macroscopic world of grams we measure in the lab.
To calculate concentrations from moles, use our Dilution Formula Calculator.
To solve for reaction quantities, check out our Stoichiometry Calculator.
For gas calculations involving moles, explore our Gas Laws Calculator.
Formula
n = m / M
- n = Moles (mol)
- m = Mass (grams, g)
- M = Molar Mass (g/mol)
Key Concepts
- • Avogadro's Number: 6.022 × 10²³ particles per mole.
- • Atomic Mass: Found on periodic table, equals molar mass for elements.
- • Molecular Mass: Sum of atomic masses in a compound.
How to Use This Calculator
Select Calculation
Choose moles, mass, or molar mass.
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Input the two known quantities.
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View instant conversion results.
Benefits of Using This Calculator
- • Quick Conversions: Instantly convert between grams and moles.
- • Lab Preparation: Calculate exact amounts needed for experiments.
- • Homework Helper: Solve chemistry problems quickly and accurately.
Common Molar Masses
Frequently Asked Questions (FAQ)
Q: What is a mole?
A: A mole is a unit of measurement in chemistry used to express amounts of a chemical substance. One mole contains exactly 6.02214076 × 10²³ elementary entities (Avogadro's number).
Q: What is molar mass?
A: Molar mass is the mass of one mole of a substance, usually expressed in grams per mole (g/mol). It is numerically equivalent to the atomic or molecular weight in atomic mass units (amu).
Q: How do I convert grams to moles?
A: To convert mass (grams) to moles, divide the mass by the substance's molar mass (Moles = Mass / Molar Mass).