How many atoms are in 4.5 moles of cu

4,5*6,02*10^23

Explanation:

The moles seem always complex topic but not in fact,

Consider that

1 mole of apple is 1 * 6,02*10^23

Same as 1 dozen of apple is 1 * 12

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.