Question

Calculate the mass percent for a solution containing 85g NaCl and 155g water.​

Answer 1

The mass percent for a solution : 35.42%

Further explanation

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

`\tt \%mass=(mass~solute)/(mass~solution)* 100\%`

mass solute = 85 g

mass solution = 85 + 155 = 240 g

`\tt \%mass=(85)/(240)* 100\%=35.42\%`