Question

A solution containing 40g of common salt in 320 of water. calculate the concentration in term of mass by mass percentage of the solution

Answer 1

Mass of solution => 40+320 = 360g

Mass by mass% of the solution = mass of solute ÷ mass of solution
= 40/360
=0.1%

Answer 2

Hey there!

Given,

Mass (solute) = 40 gram

Mass (solvent) = 320 gram

Mass (solution) = Mass (solute) + Mass (solvent)

                        = 40 gram + 320 gram

                        = 360 gram

∴ Mass % (solution) = [ Mass (solute)/Mass (solvent)] × 100

                                = [40/360] × 100

                                = 11.1 %

Hope It Helps You!