Chemistry · 2019
JEE Main · 9 January 2019, Shift 2 · Q52
At 100^° C, copper ( Cu ) has FCC unit cell structure with cell edge length of x. What is the approximate density of Cu (in g cm^-3 ) at this…
At $\displaystyle 100^{\circ} \mathrm{C}$, copper ( Cu ) has FCC unit cell structure with cell edge length of $\displaystyle x \AA$. What is the approximate density of Cu (in $\displaystyle \mathrm{g} \mathrm{cm}^{-3}$ ) at this temperature ?
[Atomic Mass of $\displaystyle \mathrm{Cu}=63.55 \mathrm{u}$ ]
Official answer
(3)
$\displaystyle \frac{422}{x^3}$
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JEE Main 2019 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.