Answer:
The molar mass of a mole of an element equal to the atomic weight of the element in grams.
Explanation:
The mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom. The mass number is an integer that is approximately equal to the numerical value of the atomic mass. Although the mass number is unitless, it is assigned units called atomic mass units (amu).
The standard atomic weight is the average of the relative atomic masses of all the isotopes of a chemical element weighted by their respective abundance on Earth. It reflects the prevalence of each natural isotope of an element.
A mole is defined as the amount of a substance that contains the number of carbon atoms in exactly 12 g of isotopically pure carbon-12. According to the most recent experimental measurements, this mass of carbon-12 contains 6.022142×10²³ atoms.
Hence, the molar mass, in grams, of a mole of an element equal to the atomic weight of the element.
