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Calculate the number of moles of iodine in 7.68×10^25 molecules of I2

User IkiK
by
8.0k points

1 Answer

4 votes

Answer:

127.57 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{7.68 * {10}^(25) }{6.02 * {10}^(23) } \\ = 127.574750...

We have the final answer as

127.57 moles

Hope this helps you

User Petrik
by
7.7k points
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