Question

The mass of an empty density bottle is 21.8 g,
when filled completely with water it is 41.8 g
and when filled completely with liquid it is
40-6 g. Find:
(a) the volume of density bottle
(b) the relative density of liquid.​

Answer 1

Answer:

(a) Volume of density bottle:

Mass of empty density bottle = M1 = 21.8 g Mass of bottle + water = M2 = 41.8 g ∴ Mass of water completely fih1ig the density bottle = M2 — M1 = 41.8 - 21.8 = 20g But 1 g of water has volume = 1 cc ∴ Volume of bottle (density bottle) = volume of water = 20 c.c. = 20 ml

(b) The relative density of liquid:

The relative density of liquid :

Mass of 20 C. C. of liquid = ( mass of density bottle + mass of 20 c.c. of liquid - mass of density bottle)

= 40.6 - 21.8

= 18.8 g

Mass of 20 C . C . of water = 20 g 

Relative density of liquid 

R . D . = Mass of 20c.c of waterMass of 20c.c. of liquid=2018.8

=21.88 = 0.94