Discover Questions

Give me an idea of useful thing that don't exist? How come metals in the solar nebula can remain solid at temperatures as high as 1,500 K but not rocks? Do the sum of the n nth roots of a complex number z always equal zero? Cr3+ concentration of Cr(OH)3 was found to be 4.0*10-6M, what is the ksp? Polygon A is similar to Polygon B. Find the perimeter of Polygon B.?