Question

Tobias found a rock that has a mass of 475kg. He placed it in 2000ml of water and the water rose to 2025ml. What is it’s density?

Answer 1

Given parameters:

Mass of rock Tobias found = 475kg

Volume of initial water = 2000mL

New volume = 2025mL

Unknown:

Density = ?

Solution:

Density is the mass per unit volume of a substance.

Mathematically;

Density =
`(mass)/(volume)`

Volume of rock = New volume - Initial volume = 2025 - 2000 = 25mL

Now let us convert the mass to g;

1000g = 1kg

So; 475kg will be 475000g

So;

Density of stone =
`(475000)/(25)` = 19000g/mL or 19000g/cm³