Which of the following contains the same number of atoms as 12 g of Magnesium? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

Moles of $Mg = 12/24 = 0.5$. We need 0.5 moles of atoms. <br>A) Moles $C = 12/12 = 1$. <br>B) Moles $Ca = 20/40 = 0.5$. <br>C) Moles $N \text{ atoms} = 7/14 = 0.5$ (If nitrogen atoms are meant, this is correct). <br>D) Moles $O \text{ atoms} = 8/16 = 0.5$.