Question

a solution is made by dissolving 40 gram sodium chloride in 250 gram of water then calculate the concentration of the solution in mass percentage

Answer 1

the concentration of the solution is 16 percent

Answer 2

$\huge\textbf{Solution}$
$<b>$
Mass of solute (sodium chloride) = 40 g 
Mass of solvent (water) = 250g

Mass of solution

=(Mass of solute + solvent)

= (40 + 250)g

= 290g

Concentration of solute in terms of mass percentage is given as,

Mass percentage of solute

$\frac{MASS \: \: OF \: \: SOLUTE}{MASS \: \: OF \: \: SOLUTION} \times 100$


$(\frac{40}{290} \times 100)\% \\ \\ = 13.79\%$

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