Question

A solution contains 40 g of
common salt in 320 g of water.
Calculate the concentration in terms of mass by mass percentage of the
solution.​

Answer 1

Answer:

A solution contains 40 g of common salt in 320 g of water. Calculate the concentration in terms of mass by mass percentage of the solution.

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Mas of common salt (solute)=40 g

Mass of water (soluted) =320 g

mass of solution=320+40

=360 g

concentration of solution=

massofsolution

M

mass

ofsolute

×100

360

40

×100=11.11%

Hence, the concentration of the solution is 11.11%

Answer 2

Answer:

Mass of solute(salt)= 40g

Mass of solvent (water)= 320g

Mass of solution= Mass of solute+solvent= 40+320= 360g

Concentration= Mass of solute/Mass of solution×100= 40/360×100= 11.1%