Atomic Mass

You can convert molecules to mass easily using the fact that there are 6.022*10^23 molecules in a mole of an substance. Convert your molecules to moles, then use the molar mass of your substance to determine the mass.

cervical mass

We can find Atomic Mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.

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the Atomic Mass number is the number of protons/electrons in an atom

Yes, Neon (Ne), a noble gas; the atomic weight (IUPAC 2005) is 20,1797 ± 0,0006. For the elements the expression atomic weight is accepted as correct after the traditional definition of IUPAC (International Union of Pure and Apllied Chemistry).

256.52 g mol-1since sulfur molecules are S8.

atomic mass is the number of protons in an atom

mass number is the number of protons plus neutrons in an atom

Independently by Dmitri Mendeleev and Lothar Meyer in 1869

Apart from a few, almost all elements have isotopes. They are almost similar except the number of neutrons they have.

the protrons, neutrons and electrons in a atom

The SI unit for measuring mass is the kilogram (kg).

Magnesium has an average atomic mass of 24.31 amu.

The atomic number correlates to the number of protons found in the nucleus of an atom. The atomic number also dictates the number of electrons that orbit the nucleus if the atom in neutral. Finally the atomic mass is the number of protons and neutrons found in the nucleus. The atomic number equals the number of protons (p+) or electron (e-).

Carbon-12 is the most common form of Carbon and therefore, counts for most of the atomic mass.

The atomic mass of Gold (Au) is 196.9665 grams per mole.

The mass does not change much. The Atomic number will increase though.

Atomic mass is a mass, the SI units of mass are kg.

The atomic mass unit is equal to one-twelfth the mass of a carbon-12 atom or 1,660538921(73)×10−27 kg.

Atomic mass unit is recognized now as a non-SI unit.

When measuring mass, you need a unit of measurement, not a dimensionless number. In the case of an atom, you would use atomic mass units. Platinum weighs a lot more than 3.25 atomic mass units. It is a heavy metal.

36.5

The atomic number is 3.

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The atomic mass is grams/mole

So when you have e.g. 12 grams of carbon which has atomic mass = 12, you have one mole. ( Avogadro's number is one mole: 6.02×10²³ )

The mass number is the total number of protons and neutrons in an atom's nucleus, while the average atomic mass is the weighted average of the masses of all isotopes of an element based on their abundance in nature. The mass number is a whole number, while the atomic mass is a decimal value.