Question

what is the molar mass of mg? 25.305 g/mol 54.938 g/mol 58.61 g/mol 24.305 g/mol

Explanation:

Step1: Recall molar mass of Mg

The molar mass of an element is numerically equal to its atomic mass (in atomic mass units) and has units of g/mol. The atomic mass of magnesium (Mg) from the periodic table is approximately 24.305 amu, so its molar mass is approximately 24.305 g/mol.

Step2: Match with options

Among the given options (25.305 g/mol, 54.938 g/mol, 58.61 g/mol, 24.305 g/mol), the correct molar mass of Mg is 24.305 g/mol.

Answer:

24.305 g/mol (the option with "24.305 g/mol")