Mass of NaCl L 13.75 g
Given
The solution of 5.5% by mass
mass of commercial bleach solution : 250 g
Required
mass of NaCl
Solution
Percent mass (% w/w) = percent mass of solute in 100 g mass of solution
Solution = solute + solvent
Solute = NaCl
Solution = Commercial bleach
Can be formulated :
[tex]\tt \%mass(w/w)=\dfrac{mass~solute}{mass~solution}\times 100\%[/tex]
Input given values in formula :
[tex]\tt \%mass=\dfrac{mass~NaCl}{mass~commercial~bleach}\times 100\%\\\\5.5\%=\dfrac{mass~NaCl}{250}\times 100\%\\\\mass~NaCl=\boxed{\bold{13.75~g}}[/tex]
