Question

A physics student Ram was given an empty density bottle, a physical balance and a certain liquid. He first found the weight of empty density bottle to a be 50 gf When completely filled with a liquid, it weighs 130 gf. He calculated the density of the liquid. What could be his answer?

Answer 1

Mass of the eempty bottle = 50 " g "
Mass of water = 100- 50= 50 " g "
Mass of the liquid = 130 - 50 = 80 " g "
Volume of the liquid = 50 " " `cm^(3) ltbr. (` :. Volume of 1 " g " water = 1 ml)`
Density of the liquid = `"mass"/"volume" = 80/50 = 1.6 " g " cm^(-3)`.