Question

A solution was prepared by adding 40g of NaOH in sufficient water to prepare 400mL of solute. Calculate the density of the solution as it is known, the mass of the solution is 440

Answer 1

Mass of solution is 440 what? Mass has units.
Let mass of solution be 440 grams ……[since units of mass is not mentioned]

Density of solution = Mass of solution / Volume of solution
= 440 g / 400 mL
= 1.1 g/ml
= 1.1 g/cm^3

Density of solution is 1.1 g/cm^3