An unknown element forms a yellow ion, XO 4 ^ 2- . It forms a precipitate with silver ions. If 48.0 of a 0.250 mol Lof silver ions is added to a solution of the unknown ion, 1.856 g of a red-brown precipitate are formed. Determine the identity of metal X

Achemistry student weighs out of phosphoric acid , a triprotic acid, into a volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with solution. calculate the volume of solution the student will need to add to reach the final equivalence point. round your answer to significant digits.

Compare and contrast physical changes with chemical changes.

What type of chemical bond is formed between two atoms of bromine 1. metallic 2. hydrogen 3. ionic 4. covalent