of a metal carbonate () on heating gives of . What is the atomic mass of the metal ? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

Reaction: $MCO_3 \rightarrow MO + CO_2$. <br>$\text{Moles } CO_2 = \frac{8.8}{44} = 0.2 \text{ mol}$. <br>$\text{Moles } MCO_3 = 0.2 \text{ mol}$. <br>$\text{Molar mass } MCO_3 = \frac{20}{0.2} = 100 \text{ g/mol}$. <br>$M + 12 + 48 = 100 \Rightarrow M = 40$.