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Which statement best describes a mole?
It is 12 units of a given substance.

It contains 6.02 mc001-1.jpg 1023 grams of sodium chloride.

It is the mass of 12 carbon atoms.

It contains 6.02 mc001-2.jpg 1023 particles of a given substance.

Respuesta :

Kalahira
It contains 6.02mc001-2.jpg particles of a given substance is the answer. 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.

Answer : The correct option is, It contains [tex]6.02\times 10^{23}[/tex] particles of a given substance.

Explanation :

According to the mole concept, one mole of a substance contains [tex]6.02\times 10^{23}[/tex] number of particles of a given substance.

For example :

1 mole of oxygen (O) contains [tex]6.02\times 10^{23}[/tex] number of oxygen atoms

1 mole of oxygen [tex](O_2)[/tex] contains [tex]2\times 6.02\times 10^{23}[/tex] number of oxygen atoms

Hence, the correct option is, It contains [tex]6.02\times 10^{23}[/tex] particles of a given substance.

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