Question

A small diamond, which is made of pure carbon, contains too many carbon atoms to count individually. Which is closest to the number of carbon atoms in a 1.0-g diamond?Disabled

A.
3.6 x 10–45 carbon atoms


Student Selected Incorrect
B.
9.2 x 101 carbon atoms


Disabled
C.
5.0 x 1022 carbon atoms


Disabled
D.
4,509 carbon atoms

Answer 1

The correct answer is option C, 5.02 x 10²² carbon atoms

Atomic mass of C = 12 g/mol

According to Avogadro, 1 mole of C has 6.023 x 10²³C atoms

Now 1 mole of C is equal to 12 g

Therefore, 12 g of C = 6.023 x 10²³ C atoms

1 g of C =
`(6.023 x 10^2^3)/(12)` C atoms = 5.02 x 10²² C atoms