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How many moles are in 9.83 x 1021 atoms of Na

1 Answer

3 votes

Answer:

0.016 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

We have


n = \frac{9.83 * {10}^(21) }{6.02 * {10}^(23) } \\ = 0.01632...

We have the final answer as

0.016 moles

Hope this helps you