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Erbureth · Answer 1 · 2021-06-07T07:09:59+0000

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

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

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