X-ray diffraction studies show that copper crystallizes in an fcc unit cell with cell edge of $3.608\times 10^{-8}$cm.In a separate environment,copper is determined to have a density of $8.92g/cm^3$,calculate the atomic (molar) mass of the copper.

Question

$\begin{array}{1 1}63.1u\\73.1u\\53.1u\\43.1u\end{array}$