Question

a rock weighing 75.0 g is placed in a graduated cylinder displacing the volume from 31.4 ml to 36.5 ml. what is density of the rock in grams/cubic centimeter?

Answer 1

Displaced volume :

1 mL = 1 cm³

36.5 mL - 31.4 mL = 5.1 cm³

Therefore:

Density = mass / volume

Density = 75.0 / 5.1

Density = 14.705 g/cm³

Answer 2

Answer: The density of the rock will be
`14.7g/cm^3`

Step-by-step explanation:

Density is defined as the mass contained per unit volume.

`Density=(mass)/(Volume)`

Given :

Mass of rock = 75.0 grams

Volume of water displaced = (36.5-31.4) ml = 5.1 ml

Putting in the values we get:

`Density=(75g)/(5.1ml)=14.7g/ml`
`1cm^3=1ml`

Thus density of the rock will be
`14.7g/cm^3`