Question

Calculate the number of moles of 7.525 x 10^22 atoms of iron

Answer 1

We know that 1 mole of iron = 6.02 * 10^23.

Given that It contains 10^22 atoms of iron = 10^22/6.02 * 10^23

                                                                      = 1/60.2

                                                                      = 0.0166 moles.

Therefore the number of moles = 0.0166 moles.