The chemical formula is Cr2(SeO4)3.
The formula for magnesium selenide is MgSe. It is a compound that is brown in color and it is a crystalline solid.
Calcium selenide, CaSe, is formed.
This compound is lead bromide - PbBr2.
The compound formed between iron and selenium is iron(II) selenide, with the chemical formula FeSe.
The chemical formula of hydrogen sulfide is H2S.
The formula for magnesium selenide is MgSe. It is a compound that is brown in color and it is a crystalline solid.
Chromic acid is the acid in chromic acid. The chemical formula is H2CrO3 (Not correct)Added & Corrected:Often the species are assigned the formulas H2CrO4 (dihydrogen chromate) and H2Cr2O7 (dihydrogen dichromate).The anhydride of these "chromic acids" is chromium trioxide, also called chromium(VI) oxide (2CrO3=Cr2O6).Regardless of its exact formula, chromic acid features chromium in an oxidation state of +6 (or VI), the highest known.
The chemical formula for chromic bisulfate is Cr(HSO4)3. This compound is formed when chromium sulfate (Cr2(SO4)3) reacts with sulfuric acid (H2SO4), resulting in the replacement of some sulfate ions by bisulfate ions (HSO4-). The compound is a coordination complex where the chromium ion is surrounded by bisulfate ligands in a specific geometric arrangement.
(NH4)2CrO4
Literally, the correct formula for potassium and iodine at standard temperature and pressure would be " K and I2". The formula for the compound formed between potassium and iodine, however, is KI.
Li2O The reaction eq'n is 4Li(s) + O2(g) = 2Li2O(s)
The chemical formula of lead chromate is PbCrO4.
The correct formula for the ionic compound formed between potassium and sulfur is K2S, as potassium has a +1 charge and sulfur has a -2 charge. The charges must balance to form a neutral compound.
ZnCl3 is a perfectly formed chemical formula- elements and numbers all in the right place- however as a compound it does not exist. The only chloride is ZnCl2
The chemical formula of lead tetroxide is Pb3O4.
This is a neutralization reaction. This reaction should result in producing a salt and water. Sodium chromate is the salt in this instance.
The compound formed between magnesium and phosphite ion is magnesium phosphite (Mg3(PO3)2).