Moles to Grams Converter
Convert moles grams between units instantly. Includes conversion tables, common equivalents, and calculation formulas.
Reviewed for accuracy by Manoj Kumar, Mathematics Educator
Moles to Grams Converter
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Formula: Grams = Moles x Molar Mass (g/mol)
Worked example โ 2.5 mol NaCl = 146.10 grams
Formula
Grams = Moles x Molar Mass (g/mol)
Multiply the number of moles by the molar mass of the substance (sum of atomic masses in the molecular formula). The result is the mass in grams. To find particles, multiply moles by Avogadro number (6.022e23).
Worked Examples
Example 1: Moles of NaCl to Grams
Problem:How many grams are in 2.5 moles of NaCl (molar mass 58.44 g/mol)?
Solution:Grams = moles x molar mass Grams = 2.5 x 58.44 = 146.10 g Kilograms = 146.10 / 1000 = 0.14610 kg Particles = 2.5 x 6.022e23 = 1.506e24
Result:2.5 mol NaCl = 146.10 grams
Example 2: Moles of Glucose to Grams
Problem:Convert 0.5 moles of glucose (C6H12O6, molar mass 180.16 g/mol) to grams.
Solution:Grams = moles x molar mass Grams = 0.5 x 180.16 = 90.08 g Milligrams = 90.08 x 1000 = 90080 mg Particles = 0.5 x 6.022e23 = 3.011e23
Result:0.5 mol glucose = 90.08 grams
Frequently Asked Questions
What is the relationship between moles and grams?
The mole is a counting unit in chemistry representing 6.02214076 times 10 to the 23rd particles (Avogadro number). To convert moles to grams, multiply the number of moles by the molar mass (molecular weight) of the substance in grams per mole. For example, 1 mole of water (H2O) has a molar mass of 18.015 g/mol, so 1 mole weighs 18.015 grams. This relationship is the foundation of stoichiometry in chemistry.
Why is the mole concept important in chemistry?
The mole bridges the gap between the atomic scale and the laboratory scale. Individual atoms and molecules are far too small to count or weigh individually, but chemical reactions occur in fixed ratios of atoms and molecules. The mole allows chemists to measure out precise amounts of reactants that correspond to balanced equation ratios. Without the mole concept, it would be impossible to predict product yields, prepare solutions of known concentration, or perform quantitative chemical analysis.
Can you convert grams to moles using Moles to Grams Converter?
Moles to Grams Converter is designed for moles-to-grams conversion, but the reverse calculation is straightforward: divide the mass in grams by the molar mass to get moles. For example, if you have 100 grams of NaCl with a molar mass of 58.44 g/mol, the number of moles is 100 / 58.44 = 1.711 moles. You can verify your reverse calculation by entering 1.711 moles of NaCl into Moles to Grams Converter to confirm you get approximately 100 grams.
References
Reviewed for accuracy by Manoj Kumar, Mathematics Educator ยท Editorial policy
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