Oxygen-16 (16O) is a stable isotope of oxygen, having 8 neutrons and 8 protons in its nucleus. It has a mass of 15.99491461956 u….Oxygen-16.

An oxygen atom has 8 positive protons and 8 neutrons in its nucleus, and 8 negative electrons speeding around the nucleus.

Answer 9: Oxygen is atomic number 8 on the periodic table, which means it has 8 protons! This means that a neutral oxygen atom will have 8 electrons (but this number can change!

atomic mass unit

Explanation: 1 atomic mass unit (a.m.u.) is the mass of a proton or a neutron which is equal to 1.6726219×10−27kg .

The main difference between amu and grams is that amu is used to express the mass in atomic level whereas gram is used as a metric unit of mass.

1 u is mass of 1 hydrogen atom. Also 6.02 × 10^23 atoms of hydrogen have 1 gram mass. So solve by basic unitary method to find what mass would 1 atom would have, which is 1/N (N is avogadro’s constant).

Chemical Computations with Avogadro’s Number and the Mole Another property of Avogadro’s number is that the mass of one mole of a substance is equal to that substance’s molecular weight. For example, the mean molecular weight of water is 18.015 atomic mass units (amu), so one mole of water weight 18.015 grams.

The dalton is simply a renaming of the unified atomic mass unit, so they have equal values—there is no distinction between the two units other than name and symbol, so the two names are synonymous as are the two unit symbols.

The mass of an element or molecule in atomic mass units is equal to the mass of a mole of the same particles in grams. Divide the number by 1,000 to get the molar mass in kilograms.

Amedeo Avogadro

physicist Jean Baptiste Perrin

Mole is commonly served with chicken in a dish called pollo en mole. It is also served with enmoladas which are enchiladas prepared with mole instead of salsa. It may sound strange, but you should try scrambled eggs with mole.

It is named after the Italian scientist Amedeo Avogadro. Thus, the Avogadro constant NA is the proportionality factor that relates the molar mass of a substance to the average mass of one molecule, and the Avogadro number is also the approximate number of nucleons in one gram of ordinary matter.

The mole is a unit used in chemistry that is equal to Avogadro’s number. It is the number of carbon atoms in 12 grams of the isotope carbon-12. The word mole comes from the word molecule.

15.998 grams

114.818 grams

One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro’s number or Avogadro’s constant.