Question

How many moles are there in a sample containing 3.408×10^24 atoms of carbon?

Answer 1

Answer:

5.66 moles

Explanation:

Step 1: List the known quantities and plan the problem.

number of C atoms = 3.408 × 10^24

1 mole = 6.02 × 10^23 atoms

So the unknown is 4.72 × 1024 = ? mol C

Step 2: Put the equation together

4.72 × 10^24 atoms × 1 mol/ 6.02 × 10^23 atoms

= 5.66113

But this is not the final answer. The final answer must be rounded to the nearest hundredth

5.66113 rounded = 5.66

So there are 5.66 moles