Amount of Substance Flashcards
Define the term ‘concentration’
The moles of solute dissolved per 1dm3 (1000 cm3) of solution
Define the term ‘molar mass’
The mass in grams per mole of a substance (gmol-1)
Define the term ‘molar volume’
The volume that 1 mole of gas occupies at room temperature and pressure (24dm3 or 24000cm3)
Define the term ‘relative atomic mass’
The weighted mean mass of an atom relative to 1/12th the mass of a carbon-12 atom
Define the term ‘relative formula mass’
The weighted mean mass of a formula unit relative to 1/12th the mass of a carbon-12 atom
Define the term ‘relative isotopic mass’
The mass of an atom of an isotope relative to 1/12th the mass of a carbon-12 atom
Define the term ‘relative molecular mass’
The weighed mean mass of a molecule relative to 1/12th the mass of a carbon-12 atom
Define the term ‘standard solution’
A solution of known concentration
Define the term ‘stoichiometry’
The molar relationship between the substances involved in a chemical reaction
Define the term ‘The Avagadro Constant’
The number of atoms per mole of the carbon-12 isotope (6.02 x 10^23 mol-1)
