calculations

Question 1

how do you work out relative formula mass of a compound

Answer 1

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.

Question 2

how to find the empirical formula

Answer 2

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

Question 3

moles equ

Answer 3

mass / relative atomic mass

Question 4

concentration equ

Answer 4

moles / volume

Question 5

relative atomic mass equ

Answer 5

mass / moles