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Mole Formula:
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Mole calculation is a fundamental concept in chemistry that relates the mass of a substance to the number of particles it contains. The mole (symbol: mol) is the SI unit for amount of substance, with one mole containing exactly 6.02214076×10²³ elementary entities.
The calculator uses the mole formula:
Where:
Explanation: This formula allows you to calculate the number of moles when you know the mass of a substance and its molar mass.
Details: Mole calculations are essential for stoichiometry in chemical reactions, determining reactant and product quantities, preparing solutions with specific concentrations, and understanding quantitative aspects of chemistry.
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 Avogadro's number?
A: Avogadro's number (6.022 × 10²³) is the number of particles in one mole of a substance, whether 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 I calculate mass from moles?
A: Yes, you can rearrange the formula: Mass = n × Molar Mass. If you know the number of moles and the molar mass, you can calculate the mass.
Q4: Why is the mole concept important in chemistry?
A: The mole provides a bridge between the atomic/molecular scale and the macroscopic scale, allowing chemists to count particles by weighing them.
Q5: What's the difference between mole and molecule?
A: A molecule is a single particle of a compound, while a mole is a specific quantity (6.022 × 10²³) of those molecules.