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Mole Formula:
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The mole calculation formula (n = mass / molar mass) is a fundamental concept in chemistry that allows conversion between the mass of a substance and the number of moles. One mole contains exactly 6.022 × 10²³ elementary entities (Avogadro's number).
The calculator uses the mole formula:
Where:
Explanation: This formula calculates the amount of substance in moles based on its mass and molar mass, which is essential for stoichiometric calculations in chemistry.
Details: Mole calculations are crucial for determining reactant and product quantities in chemical reactions, preparing solutions with specific concentrations, and understanding the quantitative aspects of chemical processes.
Tips: Enter the mass in grams and molar mass in g/mol. Both values must be positive numbers. The calculator will compute the number of moles.
Q1: What is a mole in chemistry?
A: A mole is the SI unit for amount of substance, defined as containing exactly 6.02214076 × 10²³ elementary entities (atoms, molecules, ions, or other particles).
Q2: How do I find the molar mass of a compound?
A: Molar mass is calculated by summing the atomic masses of all atoms in a chemical formula. For example, water (H₂O) has a molar mass of approximately 18.015 g/mol.
Q3: Can this calculator work backwards?
A: Yes, by rearranging the formula: Mass = n × Molar Mass. You can calculate mass if you know the number of moles and molar mass.
Q4: Why is mole concept important in chemistry?
A: The mole concept allows chemists to count particles by weighing them, making it possible to work with the enormous numbers of atoms and molecules involved in chemical reactions.
Q5: What's the difference between molecular weight and molar mass?
A: Molecular weight is the mass of one molecule (in atomic mass units), while molar mass is the mass of one mole of molecules (in grams per mole). Numerically they are equal but have different units.