The rock has a mass of 6g and a volume of 3cm3. What is the density of the rock?

2g/cm³

Explanation:

Given parameters:

Mass of rock  = 6g

Volume of rock  = 3cm³

Unknown:

Density of rock  = ?

Solution:

Density is the mass per given volume of a substance. It can be mathematically expressed as:

        Density  =  

 Insert the parameters and solve;

      Density  =   = 2g/cm³

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b