What is the molarity of #"50% w/w"# #HCl# solution for which #rho_"solution"=1.15*g*cm^-3#?
You have not specified a solvent.......and the question has not been written by a chemist......
We assume an aqueous solution of hydrochloric acid, and clearly a
And thus the concentration is.......
The most concentrated hydrochloric acid you can buy is