Answer to Question #166347 in General Chemistry for Jaleenah Swift

Question

How many moles of atoms does 138.9 g of iron metal contain? 

Answer 1

Here We will use the formulla

$\Rightarrow$ Moles (n)=$\dfrac{Weight}{Molecular Weight}$

$\Rightarrow$ Moles (n)=$\dfrac{138.9}{56}$ =2.48 moles