An empty RD bottle weighs 40 g. When completely filled with water, it weighs 85kg and when filled with another liquid, it weighs 70 g. Calculate (3) (a) Volume of the density bottle (b) Density of the liquid (c) Relative density.
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Explanation:
Mass of empty density bottle = 30 gm
mass of density bottle with water in it 62 gm
Mass if density bottle with the liquid = 54 gm
Mass of water only = 62-30=32 gm
(a) Now volume of 1 g of water = 1cm
3
∴ Volume of density bottle = 32 cm
3
(b) Mass of liquid only = 54-30=24 gm
∴ density of the liquid = ∴
Volumeofliquid
Massofliquidonly
=
32cm
3
24g
=0.75g/cm
3
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