- react recorded and identical masses of HCl with same masses of
X and Y
- record starting mass.
- collect and record amount of CO2 gas produced using a gas
syringe.
- after awhile, record mass and volume again
- using formula, mass/volume = mols to find concentration in
mols
- using formula mass/Mr = mols, to find Mr of both X and Y
- repeat experiment to obtain a more accurate result.
this was what i did. dontknow correct anot 
