Question

A rock weighing 15.0g is placed in a graduated cylinder, displacing the volume from 25.0 mL to 36.2 mL. What is the density of the rock in grams/cubic centimeter?

Answer 1

Answer : The density of the rock is,
`1.339g/cm^3`

Explanation : Given,

Mass of the rock = 15 g

Initial volume = 25 ml

Increased volume = 36.2 ml

First we have to calculate the volume of the rock.

Volume of rock = Increased volume of water - Initial volume of water

Volume of rock = 36.2 ml - 25 ml = 11.2 ml

Now we have to calculate the density of rock.

Formula used :

`Density=(Mass)/(Volume)`

Now put all the given values in this formula, we get the density of the rock.

`Density=(15g)/(11.2ml)=1.339g/ml=1.339g/cm^3`

Conversion :
`1ml=1cm^3`

Therefore, the density of the rock is,
`1.339g/cm^3`