Recent content by digeratus

Homework Statement Germanium forms a substitutional solid solution with silicon. Compute the number of germanium atoms per cubic centimeter for a germanium-silicon alloy that contains 15 wt% Ge and 85 wt% Si. The densities of pure germanium and silicon are 5.32 and 2.33 g/cm3...

That's odd; I've had the same calculator for 4 years and haven't had problems before. Thank you though. I'll see what WolframAlpha gives me or something else.

Because it says "fraction of vacant sites" does that mean I need to put the vacant sites over the total number of atoms? They don't do that in the book, but that may be because the one in the book is for "equilibrium number of vacancies?" In any case, I can't calculate that one correctly either...

Homework Statement Calculate the fraction of atom sites that are vacant for lead at its melting temperature of 327°C (600 K). Assume an energy for vacancy formation of 0.55 eV/atom. Homework Equations N = (Na)(p)/A Nv = N exp (-Q/kT) Na = avogadro's number p = density A =...