The mass of an empty density bottle is 35 g. When completely filled with water, its mass is 55 g. When completely filled with a liquid, its mass becomes 65 g. Calculate the relative density of the liquid.
Answers
Explanation:
The mass of an empty density bottle is 30g, it is 75g when filled completely with water and 65g when filled completely with a liquid. Find : a) volume of density bottle b) density of liquid and c) relative density of liquid
Mass of empty density bottle, M1 = 30 grams
MAss of bottle and water, M2 = 75 grams
Mass of liquid and liquid x, M3 = 65 grams
Mass of water = M2 – M1 = 45 grams
a) Volume of density bottle = Mass of water = 45 grams
b) Density of liquid x, D = mass of liquid/mass of water = 35/45
Mass of iquid = M3 – M1 = 65 – 30 = 35 grams
D = Mass of liquid/mass of water = 35/45 = 0.77 grams/cm3
c) Mass of water in the density bottle = 75 – 30 = 45 grams
Therefore, the volume of water in density bottle = 45 cc
Mass of the liquid whose volume is equal to the density bottle = 65 – 30 = 35 grams
Therefore, relative density of the liquid = mass of 45 cc of liquid/mass of 45 cc of water = 35/45 = 7/9 = 0.77