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

Respuesta :

Answer:

0.5 moles

Explanation:

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

[tex]n = \frac{N}{L} \\[/tex]

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

[tex]n = \frac{3.01 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{3.01}{6.02} = 0.5 \\ [/tex]

We have the final answer as

0.5 moles

Hope this helps you