jchavezjc1
jchavezjc1 jchavezjc1
  • 08-10-2021
  • Chemistry
contestada

Determine the number of moles of Al2O3 that contain 6.25 x 10^23 O atoms.​

Respuesta :

Stephen46
Stephen46 Stephen46
  • 08-10-2021

Answer:

1.04 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

[tex]n = \frac{6.25 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{6.25}{6.02} \\ = 1.0382059[/tex]

We have the final answer as

1.04 moles

Hope this helps you

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