How to find the molar mass and amount of a substance?

| November 25, 2020 | education

The molar mass of a substance (M) is the mass of one mole of a substance.
The molar mass is equal to the ratio of the mass m of a substance to the corresponding amount of a substance n (M = m / n)

You can find it by the formula M = m / n, it should also be noted that the molar mass coincides with the relative molecular mass. That is, if we want to find the molar mass of oxygen, we simply find the molecular mass. It will be equal to M (molar). (16 g / mol).

The amount of a substance is a value that shows the number of structural units contained in a substance.
The unit of the amount of a substance is the mole. Designated as n.

To find the amount of a substance, you need to divide the mass by the molar mass of the substance. If the number of molecules (N) is known, then n = N / NA (Avogadro’s number is 6.02 * 10 ^ 23).



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