What is the mass of one mole of argon?
How many grams Argon in 1 moles? The answer is 39.948.
39.948 u ± 0.001 u
- Percent composition by element
Element Symbol Atomic Mass Neon Ne 20.1797
- Although argon is non-toxic, it is 38% denser than air and therefore considered a dangerous asphyxiant in closed areas. It is difficult to detect because it is colorless, odorless, and tasteless.
- Usage as lifting gas
- Hot air.
- Water vapor.
- Hydrogen and helium.
Argon has approximately the same solubility in water as oxygen and is 2.5 times more soluble in water than nitrogen. Argon is colorless, odorless, nonflammable and nontoxic as a solid, liquid or gas. Argon is chemically inert under most conditions and forms no confirmed stable compounds at room temperature.
- Argon is a nonmetal. It is a noble gas, located in group 18 (far right column on the periodic table). Elements to the left of this line are metals, while elements to the right of this line are nonmetals. Elements that are right next to this line are metalloids.
Name Argon Atomic Mass 39.948 atomic mass units Number of Protons 18 Number of Neutrons 22 Number of Electrons 18
- Argon's atomic number is 18, so it has 18 protons; in the neutral (ordinary; un-ionized) atom, there are therefore 18 electrons. The neutron number depends on which isotope you're considering. The argon on Earth is chiefly 4°Ar, so it has 22 neutrons.
In this example, multiply the grams of Na by the conversion factor 1 mol Na/ 22.98 g Na, with 22.98g being the molar mass of one mole of Na, which then allows cancelation of grams, leaving moles of Na.
- One mole contains exactly 6.022 140 76 × 1023 elementary entities. Since the unified atomic mass unit (symbol: u, or Da) is defined as 1/12 of the mass of the 12C atom, it follows that the molar mass of a substance, measured in grams per mole, is numerically equal to its mean atomic or molecular mass measured in Da.
- 1 mole of oxygen atoms measures 16 grams in mass, so O2, with two oxygen atoms, measures 32 grams per mole.
- "Molar mass" is used to describe the mass of one mole of a chemical compound, while "atomic mass" is used to describe the mass of one mole of an element or the mass of one atom of an element. "Grams/mole" is better, because any macroscopic amount of a substance is better expressed in grams than amu.
Updated: 25th November 2019