Question

How many moles of atoms are in $0.8g$ of Iron?

Answer 1

The number of moles in Iron is calculated by:

Step1: Formula used-

Moles $=$ Mass of the element($\mathrm{g}$)$/$Molar mass(${\mathrm{gmol}}^{-1}$)

Step 2: Given-

Molar mass of Iron $=56\mathrm{g}/\mathrm{mol}$

Given mass of Zinc $=0.8\mathrm{g}$

Step3: Calculation -

The number of moles present in $0.8\mathrm{g}$of Iron $$\begin{gathered} =0.8\mathrm{g}/56{\mathrm{gmol}}^{-1} \\ =0.014 \end{gathered}$$

Hence, $0.014$ moles are present in $0.8g$ of Iron.