Question

An object with a mass of 7 g and a volume of 10 mL is most likely what substance?

Answer 1

Answer:

Ethanol

Explanation:

Given parameters:

Mass of the object  = 7g

volume of the object  = 10mL

Unknown:

The kind of substance it is = ?

Solution:

Since from the parameters, we can determine the density of the object. Density is an intensive property of substances.

So, we simply find the density and check a density table for the type of substance it is.

  Density is the mass per unit volume.

        Density  = $\frac{mass}{volume}$

Let us take the volume to cm³;

             10mL  = 10cm³

      Density  = $\frac{7}{10}$ = 0.7g/cm³

This is most likely ethanol