How is molar mass of a compound calculated?

The molar mass of a compound is calculated by adding the atomic masses of all the atoms present in the compound's chemical formula. Each element in the compound contributes its atomic mass, which can be found on the periodic table, multiplied by the number of times that element appears in the formula. For example, in water (H₂O), you would take the atomic mass of hydrogen (approximately 1 g/mol) multiplied by 2 (since there are two hydrogen atoms) and add it to the atomic mass of oxygen (approximately 16 g/mol). This results in a molar mass of about 18 g/mol for water.

This approach provides a systematic way to determine the molar mass, which is essential for converting between grams of a substance and moles, a fundamental concept in chemistry that relates the quantity of a material to its mass and helps in stoichiometric calculations.