Question

The mass of an empty density bottle is 30 g, it is 75 g when filled completely with water and 65 g when filled completely with a liquid. Find density of liquid.

Answer 1

Mass of empty density bottle (M₁) =30 g
Mass of bottle + Water (M₂) 75 g
Mass of liquid x  + density bottle   (M₃)= 65 g
mass of density bottle - liquid x  = 30g - 65g  =35g
Mass of water=M₂—M₁=75—30=45 g

Density of Iiquid x = ? 

D= `("Mass  of  Liquid") /("Mass  of  water")`=`35/45`

Mass of liquid =`M_3`-`M_1`=65-30=35 g

D=` ("Mass of liquid")/("Mass of water")`=`35/45`=0.77 g/`cm^3`