A solution containing 63% nitric acid by mass has its molarity equal to (density of the solution is 1.5gmL^(-1) )

An aqueous solution of concentrated hydrobromic acid contains 48% HBr by mass. If the density of the solution is 1.50g//L , what is its concentration :

Concentrated nitric acid used for laboratory works is 68% nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of solution is 1.504 gmL^(-1) ?

An aqueous solution of sodium chloride is marked 10%(w//w) on the bottle. The density of the solution is 1.071 gmL^(-1) . What is the molity and molarity? Also, what is the mole fraction of each components in the solution?