Question

PLS HELP - How many moles are present in 3.01 x 1023 atoms of N2 (nitrogen gas) ?

A.
0.8 moles N2
B.
0.5 moles N2
C.
1.5 moles N2
D.
2.5 moles N2

Answer 1

0.5 moles

Step-by-step explanation:

To find the number of moles in a substance given it's number of entities we use the formula

`n = (N)/(L) \\`

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

`n = \frac{3.01 * {10}^(23) }{6.02 * {10}^(23) } = (3.01)/(6.02) = 0.5 \\`

We have the final answer as

0.5 moles

Hope this helps you