Question

A solution cantain 40 gram of comman salt in 320 gram of water. Calculate the concentration in term of mass percentage of the solution

Answer 1

Mass of Solute = 40g 
Mass of solvent = 320g .

Mass of Solution = 40+ 320 = 360g. 

Mass percentage of solution = Mass of Solute / Mass of solution

Mass percentage of the solution = 40/360 * 100 = 1/9*100= 100/9 % = 11.11%

Hope helped!

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!