What is the condition for a metal oxide to form a protective layer to prevent the metal from further oxidation? MSFPhover = We can therefore say that metals from Group 2 will react with oxygen and have the following general equation, where M represent a Group 2 metal: 2M + O 2 â2MO. Iron (II) oxide, black, used as pigment. if(MSFPhover) { MSFPnav1n=MSFPpreload("_derived/obformulas_1.htm_cmp_zona2010_hbtn.gif"); MSFPnav1h=MSFPpreload("_derived/obformulas_1.htm_cmp_zona2010_hbtn_a.gif"); } If the oxide contains 16.99% O by mass, what is the identity of the metal? 1. The answer is: Sn I would like to know the steps to get this answer // --> 2MgO Oxides of some metals like lead and zinc are amphoteric i.e they react with both acid and base. The IUPAC also accepts Stock´s nomenclature for these oxides, though it is better to use the stoichiometric nomenclature when all the atoms are nonmetals and Stock´s nomenclature when there are metal and non metal atoms. // --> . Al2O3. Type the symbol for the element represented by M in the box below. The volumes per mole of La are given below: Molar volume of Al = 26.98 (g/mol) / 2.702 (g/mL) = 9.985 mL / mol There is no need to memorize all these minerals, but you get the idea of varieties of iron oxides and oxyhydroxides. if(MSFPhover) { MSFPnav2n=MSFPpreload("_derived/obnomes_1.htm_cmp_zona2010_hbtn.gif"); MSFPnav2h=MSFPpreload("_derived/obnomes_1.htm_cmp_zona2010_hbtn_a.gif"); } Which occupies a larger volume, 1 mole of MgO or 1 mole of Mg metal? hematite a-Fe2O3 Author: Las cookies de esta web se usan para personalizar contenido y anuncios, ofrecer funciones de redes sociales y analizar el tr�fico. Acids combined with metal carbonates produce a salt, water and carbon dioxide. Ac2O3. Ammonium Antimony Tungsten Oxide. Change the sign of the result. Divide this result by the subscript of the metal. The pH of water and electrolytes present in the water affect the rate of iron corrosion, because the presence of electrolytes increases the conductivity of the solution. Copper (II) oxide, black. You may have copper pots and pans in your kitchen cabinets. If O has an atomic mass of 16.00 amu, calculate the atomic mass of M and identify the element. 3) The molar ratio between Mg and O â¦ the oxygen has an oxidation number �2. // -->