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How many molecules are present in one mole of a substance?

3.01 x 10^23

6.02 x 10^22

6.02 x 10^23

One mole of a substance is defined as containing Avogadro's number of molecules, which is approximately 6.02 x 10^23. This constant allows chemists to count particles, atoms, or molecules in a sample by relating them to macroscopic quantities.

Using this number, any substance that has a mass equal to its molar mass in grams contains one mole of that substance. Therefore, when determining the number of molecules in one mole, you can confidently say it is 6.02 x 10^23, making this the correct answer.

The other options do not represent the correct value of Avogadro's number, which is fundamental in chemistry for calculations involving the amount of substance.

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1.20 x 10^24

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