A compound contains and . 3 atoms of metal combine with 2 atoms of nitrogen. The atomic weight of th — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
A compound contains $28\% \text{ Nitrogen}$ and $72\% \text{ of a metal by weight}$. 3 atoms of metal combine with 2 atoms of nitrogen. The atomic weight of the metal is:
Answer: A
💡 Solution & Explanation
Ratio of moles $M:N = 3:2$. <br>$\frac{72 / \text{At.wt}}{28 / 14} = \frac{3}{2} \Rightarrow \frac{72 / \text{At.wt}}{2} = 1.5$. <br>$72 / \text{At.wt} = 3 \Rightarrow \text{At.wt} = 24$.
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