Respuesta :

Explanation:

In order to find whether it will sink or float in water we must first find the density of the object

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 18 g

volume = 9 cm³

So we have

[tex]density = \frac{18}{9} \\ [/tex]

We have the density as 2.0 g/cm³

The object will sink in water since it's density is greater than that of water which is 1.0 g/cm³

Hope this helps you