5.2 Flashcards
1
Q
what is molar mass
A
the mass per mole of any substance (g/mol)
moles = mass/molar mass
2
Q
define a mole
A
the amount of substance that contains the same number of particles as the number of carbon atoms in 12g of the carbon 12 isotope
3
Q
define spectator ions
A
ions in an ionic compound that do not take part in the reaction
4
Q
what are coefficients
A
the numbers written in front of a species when balancing an equation
5
Q
define hydrates
A
compounds containing water of crystallisation
6
Q
what is Avogadro’s law
A
equal volumes of gas under the same conditions of temperature and pressure contain the same number of molecules
7
Q
what is molar volume
A
the volume occupied by 1 mol of any gas
8
Q
what is the equation for molar volume (Vm)
A
Vm = 24dm^3 at constant RT + P
