Answer :
Mole is a unit that has become the way of scientist and those who are interested in the filed to count the number of substances or atoms. Thus, the answer is letter B. It will be very impractical for them to count the atoms using the natural numbers are they are very small and very numerous.
Answer: B) It allows chemists to deal with a large number of atoms.
Explanation:
A mole is defined as the amount of substance that contains Avogardro number of the substance.
Avogadro's number is given by [tex]6.022\times 10^{23}[/tex].
1 mole of the substance weighs equal to the molecular weight of the substance.
1 mole of the substance occupies 22.4 L of space at standard conditions of temperature and pressure.
Thus mole allows chemists to deal with a large number of atoms.