The concentration, mass/volume percent (m/v) : 1.98%
Further explanation
[tex]\tt \%m/v=\dfrac{mass~solute}{volume~of~solution}\times 100\%[/tex]
mass solute = mass of NaCl = 30 g
volume of solution = volume of water + volume of NaCl
volume of water = 1.5 L = 1500 ml
volume of NaCl :(density = 2.16 g/ml)
[tex]\tt V=\dfrac{30}{2.16}=13.8~ml[/tex]
volume of solution :
[tex]\tt 1500+13.8=1513.8~ml[/tex]
the concentration (%m/v) :
[tex]\tt \dfrac{30}{1513.8}\times 100=1.98\%[/tex]
