The Concept of Mole in Chemistry

Which statement best describes a mole?

It contains 6.02 x 10^23 particles of a given substance. A mole is simply a unit of measurement. Units are invented when existing units are inadequate. Chemical reactions often take place at levels where using grams wouldn't make sense, yet using absolute numbers of atoms/molecules/ions would be confusing.

Which statement best describes a mole?

Answer: The correct option is, It contains 6.02 x 10^23 particles of a given substance.

Explanation:

According to the mole concept, one mole of a substance contains 6.02 x 10^23 number of particles of a given substance.

For example:

1 mole of oxygen (O) contains 6.02 x 10^23 number of oxygen atoms

1 mole of oxygen (O2) contains 2 x 6.02 x 10^23 number of oxygen atoms

Hence, the correct option is, It contains 6.02 x 10^23 particles of a given substance.

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