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Mole Calculation Formula:
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The mole calculation formula (n = mass / molar mass) is a fundamental equation in chemistry that calculates the number of moles of a substance given its mass and molar mass. One mole contains exactly 6.022 × 10²³ elementary entities (Avogadro's number).
The calculator uses the mole calculation formula:
Where:
Explanation: This formula converts between the mass of a substance and the number of moles, which is essential for stoichiometric calculations in chemistry.
Details: Mole calculations are fundamental in chemical reactions, allowing chemists to determine reactant quantities, predict product yields, and understand reaction stoichiometry. This concept is crucial for quantitative analysis in 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 a mole in chemistry?
A: A mole is the SI unit for amount of substance. One mole contains exactly 6.022 × 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 formula be used for gases?
A: For ideal gases, you can also use the ideal gas law (PV = nRT) to calculate moles when pressure, volume, and temperature are known.
Q4: What's the difference between mass and moles?
A: Mass is a measure of the amount of matter in grams, while moles count the number of particles. The mole concept allows chemists to work with measurable quantities of atoms and molecules.
Q5: Why is Avogadro's number important?
A: Avogadro's number (6.022 × 10²³) provides the connection between the atomic scale and the macroscopic scale, allowing us to count atoms by weighing.