The Mole and Avaogardo Constant Flashcards
What is a mole?
A mole is the relative mass ( atomic molecular or formula mass in grams.
A mole is the amount of substance that has the same number of specified particles of ( atom ions & molecular) as there atomic are exactly 12 carbon- 12 isotopes.
What is often refer to the mass ?
We often refer to the mass of one mole substance as the molar mass.
What is the molar mass?
The molar mass is the unit of grams per mole usually written as goml1 so the molar mass of sodium is 23.0gmol1
What’s the number of atom in a mole?
The number of atom in a mole of atom is very large 6 x 1023 of atom. This is called avogrado constant. So in one mole of sodium there are 6 x 1023 sodium atom.
What is Relative atomic mass?
The number of atom of a substance easily found by divide the mass of a substance by relative atomic mass or relative molecular on formula mass for compounds.
What is the relative atomic formula?
Number of mass = mass of a substance in grams(g)/ molar mass( gmol*1)
What is avogrado law ?
Avogrado law state that under the same condition of temperature and pressure equal volume to gas contain the same number of molecular from This is follow that equal volume of all gases at the same temperature and pressure contain the same number of mole of gas. A room temperature and pressure (r.t.p) one mole of any occupies a volume of 24 dm3 1dm3 = 1000dm*3)
What is R.A.M
It’s the relative atomic mass
Its the ratio of the average mass of an atom of carbon-12
What is R.M.M
It’s the molecular mass
The relative molecular mass of an element or a compound is the ratio of the mass of one molecule of the element.
What is R.F.M
It’s the relative formula mass
calculated by adding up the atomic masses of all the atoms in a molecule
