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41 votes
How many moles are in 8.11 x 10e20 molecules of CH4

User KryptoniteDove
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1 Answer

10 votes
10 votes

Answer:

0.0013 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{8.11 * {10}^(20) }{6.02 * {10}^(23) } \\ = 0.0013471

We have the final answer as

0.0013 moles

Hope this helps you

User AKhooli
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2.4k points