Question

the number of atom in 7.4 moles of Iron are

Answer 1

7.4 moles of iron contain 4.5X10^24 atoms of iron.

Answer 2

Answer:  4.457 x 10^23  atoms

Explanation:   One mole of any element contains   6,023x10^23 atoms

                        so  7.4 moles of Iron  =  7.4x6.023x10^23 atoms                  

                                                              =  4.457 x 10^23  atoms