the mass of empty density bottle is 21.8g when filled completly with waterit is 41.8g and when filled completely with liquidit is
Answers
The right question would be : The mass of an empty density bottle is 21.8 g, when filled completely with water 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:
Density of water is 1 g Cm3
∴ Volume of density bottle = weight of water in grams completely filling the bottle
(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:
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 = 20g
Relative density of liquid
RD = Mass of 20 c.c of liquid/ Mass of 20 c.c of water
= 18.8/20
= 1.88/2
= 0.94