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Convert grams to moles and moles to grams using a simply calculator. Plus, learn the g to mol formula and how to account for molar mass.
To convert grams to moles, start by multiplying the number of atoms by the atomic weight for each element in the compound. Then, add all of your answers together to find the molar mass of the compound.
This grams to moles/moles to grams calculator converts between moles and grams using a formula of a substance.
We can calculate it in a simple way by dividing the mass of the substance m by its amount in moles n: μ = m/n. The SI unit of molar mass is kg/mol, but the g/mol unit is more commonly used. Molar mass vs. molecular weight. It may seem as though the two quantities mean the same thing, but this is not true.
For example, if you have a substance with a mass of 18 grams and a molar mass of 18 g/mol (like water), the calculation would be as follows: m = M / Mw. m = 18 g / 18 g/mol. m = 1 mole. Thus, the number of moles of this substance would be 1 mole.
We use the molar mass (mass of one mole) of the substance to convert between mass and moles. When writing calculations, we denote the molar mass of a substance by an upper case “M” (e.g. M(Ne) means “the molar mass of neon”).
There are three steps to converting grams of a substance to moles. Determine how many grams are given in the problem. Calculate the molar mass of the substance.
Discover the Mole Calculator, your go-to tool for calculating moles, molecular weight, and conversions in chemistry. Easily determine moles from grams, liters, or molecules with our user-friendly interface.
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To accurately calculate the number of moles n in a substance of a certain mass m (in grams), you must use the grams-to-moles formula. M is the material’s molar weight. The unit is g/mol. n = m / M.