M=DxV is a formula for finding*

Density

Explanation:

Density of a substance is the mass per unit volume of the substance.

Mass is the amount of particles contained in a matter

Volume is the space occupied by the substance;

 To find density, we simply use;

          Density  =  

 So;

 Mass  = Density x Volume

   From;

            M = D x V

M is the mass

D is the is the density

V is the volume

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"