Kelvi

Copper crystallizes in an fcc unit cell with a cell edge length of $3.608 \times 10^{-8}$ cm. The density of copper is $8.92$ g cm $^{-3}.$ Calculate the atomic mass of copper.

hard

Basic Concepts

2022

chemistry

$63.1$ u

$31.55$ u

$60$ u

$65$ u

Explanation

To solve this problem, we need to use the formula for the density of a crystal lattice. $\\$ The density $\rho$ of a crystal is given by: $\\ \rho = \frac{Z \cdot M}{a^3 \cdot N_A} \\$

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Copper crystallizes in an fcc unit cell with a cell edge length of 3.608×10−8 3.608 \times 10^{-8} 3.608×10−8 cm. The density of copper is 8.92 8.92 8.92 g cm−3.^{-3}. −3. Calculate the atomic mass of copper.

Explanation

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Copper crystallizes in an fcc unit cell with a cell edge length of $3.608 \times 10^{-8}$ cm. The density of copper is $8.92$ g cm $^{-3}.$ Calculate the atomic mass of copper.