12/19/2023 0 Comments Potassium molar massTo avoid confusion, take a look at the following example. Therefore, the molar mass can be given a new definition, that is, molar mass is the total mass of 6.023 x 10 23 atoms (or molecules) of a particular substance. It is a constant because no matter what the type of atom is, one mole of it is equal to that amount of atoms (or molecules). This number is called the Avogadro’s number. ![]() One mole of a substance is equal to a very large number, 6.023 x 10 23 of atoms (or molecules) which the substance is made of. Mole or mol is the unit used to measure the amount of a substance. The molar mass can be calculated using the following equation. However, the SI unit for molar mass is kgmol -1 (or kg/mol). The most commonly used unit for the molar mass of a substance is gmol -1. Molar mass is the mass of a mole of a particular substance. Key Terms: Avogadro’s Number, Boiling Point Elevation, Calusius-Clapeyron, Cryoscopic Constant, Ebullioscopic Constant, Freezing Point Depression, Molality, Molar Mass, Molecular Weight, Osmotic Pressure, Relative Atomic Mass Why is it Important to Know the Molar Mass of a Substance – Several Methods to Calculate the Molar Mass with Examplesģ. – Definition, Equation for Calculation, Explanation ![]() In this article, we will be discussing five different methods using atomic masses, equation, boiling point elevation, freezing point depression, and osmotic pressure, to calculate the molar mass. It is very useful in analyzing, comparing and predicting the other physical and chemical properties such as density, melting point, boiling point, and the amount of substance that react with another substance in a system. Molar mass is an important physical property of substances.
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