1
Q
how do you work out relative formula mass of a compound
A
use the mass number of the elements and add them together.
if there’s a smaller number, times the symbol it’s attached to.
if it’s in a bracket, times all the symbols in the brackets.
2
Q
how to find the empirical formula
A
mass / relative atomic mass
that gives you moles, then you turn it into a ratio?
then you divide by the smallest number, so it will have 1 somewhere.
put each number you get next to the symbol
3
Q
moles equ
A
mass / relative atomic mass
4
Q
concentration equ
A
moles / volume
5
Q
relative atomic mass equ
A
mass / moles
