Question

An empty density vessel weighs 55g. When completely filled with water at 40°C it
weighs 70 g and when filled with an unknown liquid it weighs 90 g. Find out the relative density of the unknown liquid .



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Answer 1

Answer:

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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

Answer 2

Explanation:

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