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What is the mass percent of a solution if 42.9 grams of aspirin is dissolved into 175 mL of ethanol? (Density of ethanol is 0.789 g/mL

  • chemistry -

    You are calculating w/w%, which is

    mass (A) x100%/(total mass A + M)

    From the density we can find the mass of ethanol

    M=0.789 g/ml x 175 ml

    A=42.9 g

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