Question

a solution contains 40g of common salt in 320g of water calculate the concentration in the term of mass by mass percentage of the solution​

Answer 1

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 %