Weight from SG and Volume

2. Density & Specific Gravity 2.1) Specific Gravity 2.1.1) SG - General Weight from SG and Volume Easy 1

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If the specific gravity of an oil is 0.819, then calculate the weight of the oil that occupies 494.51 mL of volume.

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lb equals 405 kg

    Answer: 405 g.
    • We know that, Specific Gravity (SG) of a substance is the ratio of the weight of the substance and the weight of water that occupies the volume of the substance. In order to keep it simpler, we can just divide the numbers of 'weight in gram' by the 'volume in ml'.
    • We can write: SG of the substance = 405/494.51 = 0.819

    SG → 0.819 = Weight in grams → ?
    Volume in mL → 494.51
    Therefore, Weight in grams = 0.819 × 494.51 = 405;