Question

calculate the no. of iron atoms in piece of iron weighing 8.4 g​

Answer 1

1 mole of iron equal to gram atomic mass

=56g

56g of iron contains 6.022×10^23

8.4g of iron contain = 6.022×10^23/56×8.4

= 6.022×10^23/7

= 8.5× 10^22..

Answer 2

hope it helps!

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