Answer:
A po
How to convert grams to moles: an example
Take a look at the example of how to calculate moles from grams. Imagine you have 6 liters of pure water:
Find the molar mass of a water molecule (H₂O). It's ca. 18.015 g/mol.
Convert the volume of the water to its mass, assuming that the density of pure water is 998 kg/m³:
m = 6 l * 998 kg/m³ = 0.006 m³ * 998 kg/m³= 5.988 kg.
It's easier to work with grams, so convert the mass:
5.988 kg = 5988 g.
As you already know how the grams to moles conversion work, find the number of moles:
n = 5988 g / 18.015 g/mol = 332.4 mol.
You can always use our grams to moles calculator to check the result!
Knowing how to convert grams to moles may be helpful in numerous chemical tasks, e.g., finding the mole fraction of a solution.
Wojciech Sas, PhD candidate
Choose one of the common chemicals or enter your own molar mass value
Chemical
Common Gases and Liquids
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Water (H₂O)
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Molar mass
18.015
g
/mol
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Grams to moles converter
Mass
45.6
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Number of moles
2.531
mol
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