What is the molar mass of an element? the total number of particles in one gram of the element the mass of 6.02 x 1023 representative particles of the element the number of amus (atomic mass units) in 6.02 x 1023 moles of the element 1.0 gram divided by the atomic weight of the element

The answer is: the mass of 6.02 x 1023 representative particles of the element.

The base SI unit for molar mass is kg/mol, but chemist more use g/mol (gram per mole).

For example, molar mas of ammonia is 17.031 g/mol.

M(NH₃) = Ar(N) + 3 · Ar(H) · g/mol.

M(NH₃) = 14.007 + 3 · 1.008 · g/mol.

M(NH₃) = 17.031 g/mol.

The molar mass (M) is the mass of a given substance (in this example ammonia) divided by the amount of substance.

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