The percent mass of potassium chloride in a solution is to be considered as the 26%.
Since
mass percent = (mass of solute / total mass of solution ) *100 %
Also,
mass of potassium chloride =25.00g
volume of water= 70.00 ml
Now
mass of solution = mass of solute + mass of solvent
= 25.00 + 70.0
= 95g
Now
mass percent = (mass of solute / total mass of solution ) * 100 %
= (25/95) * 100
= 26.31%
= 26%
Hence, The percent mass of potassium chloride in a solution is to be considered as the 26%.
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