Question

A 1.00 carat pure diamond has a mass of 0.2 grams. How many carbon atoms are there within this diamond?

Answer 1

4

ok that's your answer.....

Answer 2

Answer:

1

⋅

10

22

atoms

Explanation:

In this example you have 0.2 grams of carbon atoms. The first step is to find out how many moles this is.

The molar mass of carbon is 12.01 g/mol, you have 0.2 gram so:

0.2

g

12.01

g

m

o

l

=

0.01665

...

m

o

l

The number of atoms can be calculated using Avogadro's constant that says that 1 mole of any element contains

6.022

⋅

10

23

atoms. So the number of atoms in this example is:

6.022

⋅

10

23

atoms

m

o

l

⋅

0.01665

m

o

l

=

1

⋅

10

22

atoms