Chemistry

An aqueous solution of NaCl is 270m. If the density of the solution is 1.20g/ml. Find a) % NaCl by mass b) Molarity of NaCl in the solution.

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asked by Arwida
  1. I assume you men 270 molal.
    270 m means 270 mol/kg solvent.
    g NaCl = 270 x 58.5 (apprx) = estimated 16000 g (you need to go through the entire problem and redo the math; I've estimated all of these numbers.
    The mass of the solution is 1000 g solvent + 16000 g NaCl = about 17000g total
    %NaCl = (mass NaCl/total mass)*100 = about 94%. I'll wait to do the b part until you've confirmed this post is correct.

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