Answer:
here is the answer.i hope its help you
Explanation:
2M solution of NaOH means 2 mole NaOH is present in 1L solution;
density =1.28g/ml
mass of solution = volume of solution × density
=1200×1.28
=1280g
mass of solvent = mass of solution - mass of solute
=1280−80
=1200g
molality =12002×1200
=1220=610
=35=1.67m
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