An aluminum cylinder weighs 1.07 N. When this same cylinder is completely submerged in alcohol, the volume of the displaced alcohol is 3.90 × 10−5 m3. If the cylinder is suspended from a scale while submerged in the alcohol, the scale reading is 0.743 N. What is the specific gravity of the alcohol?  (The density of water is 1.00 × 103 kg/m3)

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