Question

How many moles of aluminum do 6.1×10^24 aluminum atoms represent? Express your answer using two significant figures.

Answer 1

In a mole of aluminium atoms, there exist

6.02

⋅

10

23

aluminium atoms. So here, we get:

3.8

⋅

10

24

A

l

atoms

6.02

⋅

10

23

A

l

atoms

/mol

≈

6.3

mol