What type of reaction is represented here:
2K + Ca(OH)2 → 2KOH+ Ca

An experimental procedure requires a 10 ml of acid to be dissolved

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm