Question

a aqueous solution of hydrochloric acid has concentration of 37. wt % convert in concentration value to molar concentration if the density of the solution is 1.19g/ml molar mass of Hcl=36.46g/mol t

Answer 1

density = 1.19 g/mL.
mass of 1000 mL is 1.19 g/mL x 1000 = 1190g

How much of that is HCl. 37% so
1190 g x 0.37 = about 440g but that is an estimate.
How many mols is that?
440/36.46 = about 12 mols.
12 mols/1000 mL = about 12 M.