Question

2. Why is the mole important in chemistry?a. Because it always weighs the same amountb. Because it always counts the same number of itemsc. Because it can be weighed on a scale

Answer 1

The moles allow us to associate the microscopic scale of atoms to the macroscopic one to be able to make calculations of mass. The weight of a mole will depend on the element so it does not always weigh the same.

One mole will always represent 6.022x10^23 atoms according to Avogadro's number so the correct answer will be:

b. Because it always counts the same number of items