How many moles contain 3.1 x 1022 molecules of H2O

Explanation:

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

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

N = 3.1 × 10²² molecules of H2O

We have

We have the final answer as

Hope this helps you

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