Question

Which unit is used for measuring atomic mass?

atomic mole
grams/mole
grams
atomic mass unit
atomic mass weight

Answer 1

The atomic mass unit (amu) is used for measuring atomic mass, where one amu is one-twelfth the mass of a carbon-12 atom. Molar mass, given in grams per mole, is numerically equivalent to atomic or molecular mass in amu.

Step-by-step explanation:

The unit used for measuring atomic mass is the atomic mass unit (amu). One amu is defined as one-twelfth of the mass of a carbon-12 atom, which equals 1.660539 × 10-24 grams. The atomic mass of an element represents the number of grams in 1 mol of atoms of that element, and this is sometimes referred to as the molar mass of the element, with units given in grams per mole (g/mol).

For practical purposes, the molar mass of a substance is numerically equivalent to its atomic or molecular mass in amu. The mole is another fundamental unit in chemistry that represents the amount of substance, providing a bridge between atomic scale measurements and macroscopic quantities.

Using a mass spectrometer, scientists can measure the miniscule masses of individual atoms, but comparing these masses using amu is far more convenient for scientific analysis. The molar mass concept simplifies the conversion between grams, moles, and the number of atoms or molecules, which is critical for chemical calculations.

Answer 2

The answer is Atomic Mass unit (Amu)
One unified atomic mass is numerically equivalent to 1 g/mol and is equal to the mass of one nucleon.
To describe atomic mass, it is also common to use Dalton as similar unit measurement as a form of respect to his works in Atom.