Respuesta :

We have our solute = NaCl

We need to find the percent of this solution, given as % (w/v)

% w/v: X grams of solute ------ 100 mL of solution

40 g are diluted in 0.5 mL, therefore:

40 g NaCl ------- 0.5 mL

X ------- 100 mL

X =

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