A mixture of and weighing was heated until the was completely sublimed. The residue weighed . What i — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
A mixture of $NH_4Cl$ and $NaCl$ weighing $1.0\text{ g}$ was heated until the $NH_4Cl$ was completely sublimed. The residue weighed $0.57\text{ g}$. What is the percentage of $NH_4Cl$ in the mixture?
Answer: 43
💡 Solution & Explanation
$\text{Mass of } NH_4Cl \text{ lost} = 1.0 - 0.57 = 0.43\text{ g}$. <br>$\% NH_4Cl = (0.43 / 1.0) \times 100 = 43\%$.
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