Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

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.

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

Can you answer this question?

1 Answer

0 votes
In case of fcc lattice,number of atoms per unit cell,$x=4$ atoms
Therefore,$M=\large\frac{dN_A a^3}{z}$
$\Rightarrow \large\frac{8.92\times 6.023\times 10^{23}\times (3.608\times 10^{-8})^3}{4}$g/mol
$\Rightarrow$ 63.1g/mol
$\therefore$ Atomic mass of copper =63.1u
answered Aug 1, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App