Moles and Equations Flashcards
1
Q
Amount of a substance
A
The quantity whose unit is the mole. Chemists use ‘amount of substance’ as a means of counting atoms
2
Q
Mole
A
The unit for amount of substance. The amount of any substance containing as many particles as there are carbon atoms in exactly 12g of the carbon-12 isotope
3
Q
Avogadro constant, N(A)
A
The number of particles per mole (6.02x10^23)
4
Q
Molar mass
A
The mass per mole of a substance. The units are g mol^-1
5
Q
Empirical formula
A
The simplest whole number ratio of atoms of each element present in a compound
6
Q
Molecular formula
A
The actual number of atoms of each element in a molecule
7
Q
Stoichiometry
A
The molar relationship between the relative quantities of substances taking part in a reaction
