Question

What is the number of moles in 3.2x10^24 atoms of nitrogen?

A. 1.9 moles
B. 5.3 moles
C.9.5 moles
D. 19.2 moles

Answer 1

Option B

Step-by-step explanation:

Use the Avogadro constant of 6.02 x 10^23

For Option A

1.9 moles x (6.02 x 10^23) = 1.1438 x 10^24

For Option B

5.3 moles x (6.02 x 10^23) = 3.1906 x 10^24

For Option C

9.5 moles x (6.02 x 10^23) = 5.719 x 10^24

For Option D

19.2 moles x (6.02 x 10^23) = 1.1558 x 10^25

The closest to 3.2 x 10^24 is Option B.