An man in Arkansas recently found a 9 carat diamond at Crater of Diamonds State Park. Five carats are equivalent to one gram, so this diamond weighs 1.8 g. Diamond is a crystalline form of the element carbon. How many atoms of carbon are in this 1.8 g diamond

The answer is "1.8 g diamond includes 9.03e22 atoms".

Explanation:

Given:

Weight of 9-carat diamond = 1.8 g

weight of 1-mole carbon  =12 g

calculating the moles which are available into  18 g carbon weight:

 x= Carbon moles weight in 1.8 g

In 1 mole element associated with Avogadro's number that is

 Carbon includes in 1 mol

0.15 mol of carbon includes:

Using the scientific notation:

0.15 mol of carbon includes:  9.03e22 atoms. So,   1.8 g diamond includes 9.03e22 atoms.

i just learnt this recently but i need to look through my notes again