Density of aqueous solution of NaOH is 1.2`g//cm^3`, then find its molality [Given density of water = 1`g//cm^(3)`

The density of 2M aqueous solution of NaOH is 1.28g//cm^(3) . The molality of the solution is [Given that molecular mass of NaOH=40gmol^(-1) ]

80g NaOH was added to 2L water. Find molality of solution density of water =1g//mL .

The molarity of 5 molal aqueous solution of NaOH having density 1.2g/cc is :

The density of copper is 8.9g//cm^(3) . Calculate the relative density of copper. (Given, density of water =1.0g//cm^(3) ).

The density of 3M solution of NaCl is 1.25 g mL^(-1) . The molality of the solution is

The density of 2 molal aqueous solution of NaOH is 1.10 "gm L"^(-1) . Calculate the molarity of the solution.

0.2 M aqueous solution of NaOH ( Mole mass =40 ) .Find mole fraction of NaOH. [Given : Density of solution = 1 kg // dm^(3) ]