Stoichiometry Key Definitions Flashcards
1
Q
Relative Atomic Mass, Aᵣ
A
The average mass of the isotopes of an element compared to 1/12th of the mass of an atom of 12C.
2
Q
Molecular Formula
A
The molecular formula of a compound is defined as the number and type of different atoms in one molecule.
3
Q
Relative Molecular Mass, Mᵣ
A
The sum of the relative atomic masses. Relative formula mass, Mᵣ, is used for ionic compounds.
4
Q
Relative formula Mass
A
Mᵣ is used for ionic compound
5
Q
Mole
A
The unit of amount of substance. The number is called Avagadro’s number (Abagadro constant) (1 mole contains 6.02 x 10²³)
