Question

A rock weighing 26.0 g is placed in in a graduated cylinder displacing the volume from 13.2mL to 25.3 mL. What is the density of the rock in grams/cubic centimeter?

Answer 1

Answer : The density of the rock is, $2.148g/cm^3$

Explanation : Given,

Mass of the rock = 26 g

Initial volume = 13.2 ml

Increased volume = 25.3 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 = 25.3 ml - 13.2 ml = 12.1 ml

Now we have to calculate the density of rock.

Formula used :

$Density=\frac{Mass}{Volume}$

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

$Density=\frac{26g}{12.1ml}=1.339g/ml=2.148g/cm^3$

Conversion : $1ml=1cm^3$

Therefore, the density of the rock is, $2.148g/cm^3$

Answer 2

2.11487 grams/cubic centimeter