The acid was later studied by 9th century physician and alchemist Ibn Zakariya al-Razi (Rhases), who obtained the substance by dry distillation of minerals including iron(II) sulfate heptahydrate, FeSO4 • 7H2O, and copper(II) sulfate pentahydrate, CuSO4 • 5H2O. When heated, these compoun...
What is the balanced equation for the copper oxide formation? Enthalpy of Formation: A thermochemical equation representing the formation of a particular substance requires us to follow the rules described below: We wish to produce one mole of the desired product. The reagents must ...
Everyone knows the cause of the discoloration of magnesium sulphate. In fact, as a chemical substance, it can chemically change with many substances to cause color change. Of course, we can take corresponding solutions to prevent the addition of discolored substances and prevent discoloration.Prev...
4. Copper, iron and steel rust orange/red because that is how the oxygen mixes with the metal. 5. Paint and oil are great substances for prevention of rust. 6. It depends how much O2 is in the air that you put the rusting metal in. ...
process, which results in the brittle brown substance we call rust. When oxidation occurs in copper, on the other hand, the result is a greenish coating calledcopper oxide. The metal itself is not weakened by oxidation, but the surface develops apatinaafter years of exposure to air and ...
A smooth final surface of a substance, such as concrete, applied to a floor. Mortar A vessel in which substances are crushed or ground with a pestle. Screed A piece or narrow strip cut or torn off from a larger whole; a shred. Mortar A machine in which materials are ground and blended...
Taste is the perception produced or stimulated when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue. Test A procedure for critical evaluation; a means of determining the presence, quality, or truth of something...
What single reagent could add that would allow differentiating between the member of each pair of the solid compounds. What happens to a substance when the reagent is added and write a balanced net ionic equation. AgNO_3 and AgCl What single reagent could add that would allow differentiatin...
) The protoplasmic substance of the nucleus of a cell: nucleoplasm; -- in opposition to kytoplasma, the protoplasm of the cell. Karyostenosis (n.) Direct cell division (in which there is first a simple division of the nucleus, without any changes in its structure, followed by division of...
Liquid A is added to some iron filings.The reaction produces a substance called iron sulphate,and a gas that extinguishes a lighted splint with a 'pop' sound.(a) Identify the gas produced?[1m] (b) Identify the liquid.[1m] (c) What gas would be produced if liquid A were added to ...