Chemistry

Problem

Aluminum crystallizes in a face-centered cubic lattice. An alloy is produced in which 10.0 % of the Al atoms are replaced by Mg atoms, and the lattice parameter is unchanged. Given the atomic masses

M_{\text{Al}} = 26.98\,\text{g mol}^{-1}

and

M_{\text{Mg}} = 24.31\,\text{g mol}^{-1}

, what is the approximate percent change in density of the alloy relative to pure aluminum? a) No significant change b) Decreases by about 10 % c) Decreases by about 1 % d) Increases by about 1 %

Browse the problem library