A common question about laser eye surgery is simply, âHow much is LASIK?â The best answer is this: There is no single answer. The cost of LASIK varies widely from the incredible $299 per eye on TV commercials to the equally incredible $5,000 per eye.
A alloy is a mixture or solid solution of two metals or a metal and a non metal. Mixtures of metals, any metals typically when one or more are molten.
For instance water is always two atoms of hydrogen to 1 atom of oxygen. A mixture does not have a specific ratio of the substances which make it up. Alloys can be in any proportion, and are therefore, mixtures, despite the fact that in a metal alloy the metal atoms are covalently bonded by pi bonds.pdate: pisgahchemist: Alloys can be in any proportion, and are therefore, mixtures. But think of the different crystalline phases of brass, which only exist over different and distinct ranges of Cu:Zn ratios, with heterogeneous mixtures in between (see Cu:Zn phase diagram).