Posted by Amanda on Sunday, March 25, 2012 at 4:35pm.
0.4 M soln means 0.4 mol/L soln.
mols = g/molar mass
0.4 mol = g/molar mass.
Calculate molar mass CuSO4, solve for grams, weigh that many grams, add to a 1 L volumetric flask, add some water, swirl until all of the salt is dissolved, make to the mark with distilled water, shake to mix thoroughly.
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