Question

A small bottle weighs 20g when empty and 22g when filled with water when filled with oil it weighs 21.76g.Find density of oil

Answer 1

Bottle when filled with water gains 2 g
Therefore,
Mass of water = 2 g
Density of water = 1 g/cm³

Volume of bottle = Mass of water / Density of water
= 2 g / (1 g/cm³)
= 2 cm³

Density of oil = Mass of oil / Volume of bottle
= (21.76 g - 20 g) / 2 cm³
= 0.88 g/cm³

Density of oil is 0.88 g/cm³

Answer 2

Answer:

Given that-

Weight of empty bottle = 20 g ,

And weight of water filled bottle = 22g

So the weight of water will be = 22-2 = 2g.

As we knew density of water = 1 g/cm3.

Then the volume of water will be =  = 2/1 = 2 cm3

So capacity of bottle = 2cm3.

So the volume of oil which is filled in bottle is = 2cm3.

Also given that weight of bottle filled with oil = 21.76g.

Weight of oil will be = 21.76 - 20 = 1.76g

Then the density of oil =  = 0.88 g/cm3

Explanation: