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The mass from moles calculation is a fundamental concept in chemistry that allows you to determine the mass of a substance when you know the number of moles and its molar mass. This relationship is expressed by the formula: Mass = n × Molar Mass.
The calculator uses the mass formula:
Where:
Explanation: This formula directly converts between the number of moles of a substance and its mass using the substance's molar mass as the conversion factor.
Details: Calculating mass from moles is essential in chemical reactions, stoichiometry, solution preparation, and pharmaceutical applications where precise quantities of substances are required.
Tips: Enter the number of moles and the molar mass of the substance. Both values must be positive numbers. The calculator will provide the mass in grams.
Q1: What is a mole in chemistry?
A: A mole is the SI unit for amount of substance, defined as exactly 6.02214076×10²³ particles (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 molecule. For example, water (H₂O) has a molar mass of approximately 18.015 g/mol.
Q3: Can this calculator be used for any substance?
A: Yes, as long as you know the number of moles and the molar mass of the substance, this formula works for elements, compounds, and mixtures.
Q4: What's the difference between molecular weight and molar mass?
A: Molecular weight is the mass of one molecule, while molar mass is the mass of one mole of substance. They have the same numerical value but different units (amu vs. g/mol).
Q5: Why is this calculation important in chemistry?
A: This calculation is fundamental to stoichiometry, allowing chemists to measure precise amounts of substances for reactions, analysis, and manufacturing processes.