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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?

User Beata
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2 Answers

3 votes
2.11487 grams/cubic centimeter
User Deltakroneker
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3 votes

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=(Mass)/(Volume)

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


Density=(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

User Aurelio
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