Hi! I'm so confused please help me
I was given this question in my mock but I still don't really understand it:
0.72 g of magnesium is added to 100 cm of hydrochloric acid.
The hydrochloric acid is in excess.
Calculate the concentration of the magnesium chloride (MCl2) solution produced in g/dm'.
Relative atomic mass (A): Mg = 24
Relative formula mass (M): MgCl = 95
Wouldnt I just do mass of solute ÷ volume of solvent in dm3? so 0.72 ÷ 0.1? but then why have they given me the relative atomic and formula mass?
PLEASE HELP!!