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A mystery liquid was given to you by an investigator. He is trying to identify it by looking at its physical characteristics. You measure out 20.0 milliliters of the liquid and find its mass to be 15.9 grams. According to the table, which liquid do you believe is the mystery substance? A) Lamp oil B) Baby oil C) Vegetable oil D) Rubbing alcohol

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Catya
Density has units of grams/mL

So divide grams by milliliters to get the density.

15.8 g / 20 mL  = 0.795 g/mL

that's a very low density so I'm going to guess it's the rubbing alcohol but look in tables provided to you.

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