Aluminum oxide chemical formula

The chemical formula for limestone is CaCOj and upon burning forms calcium oxide (CaO), which is known as burnt lime. Calcium oxide, when mixed with water, forms calcium hydroxide (Ca(OH)2). Calcium hydroxide is used to treat water as a coagulation aid along with aluminum sulfate. 

C03-0068. Write chemical formulas for these compounds (a) potassium chlorate (b) ammonium hydrogen carbonate (c) iron(II) phosphate (d) copper(II) nitrate hexahydrate (e) aluminum chloride (Q cadmium(II) chloride and (g) potassium oxide. 

As expected, the EDS data set indicates that the polymeric matrix material (the PE-PP blend) is composed only of carbon (hydrogen is not detectable by this method). The particle, however, appears to be composed mainly of aluminum and oxygen along with small amounts of copper. The ratio of aluminum to oxygen is consistent with the chemical formula for aluminum oxide (A1203). The SEM-EDS results are consistent with aluminum oxide and traces of copper as the primary constituents of the particulate contamination. (Al2O3.3H20 is a commonly used fire-retardant additive in polymeric products.)... 

The chemical formulas for the oxides of lithium, beryllium, and boron are Li20, BeO, and B2O3. Write the formulas for the oxides of sodium, potassium, magnesium, calcium, aluminum, and gallium. Explain how you determined their formulas. 

When writing a chemical formula, you learned that you write the metal element first. Similarly, the metal comes first when naming a chemical compound. For example, sodium chloride is formed from the metal sodium and the non-metal chlorine. Think of other names you have seen in this chapter, such as beryllium chloride, calcium oxide, and aluminum oxide. In each case, the metal is first and the non-metal is second. In other words, the cation is first and the anion is second. This is just one of the rules in chemical nomenclature the system that is used in chemistry for naming compounds. 

In Chap. 8, the balanced chemical equation was introduced. The equation expresses the ratiota of numbers of formula units of each chemical involved in the reaction. Thus, for the reaction of aluminum w th oxygen to produce aluminum oxide... 

Figure 8.7 The aluminum oxides and hydroxides and their temperatures of interconversion. Hydroxide materials are named along with their chemical formulae oxides all have the composition AI2O3 and so are indicated by the Greek letter associated with the phase. The a-phase is indicated in large font and bold as it is the thermodynamically most stable oxide. Adapted from reference [61].

Suppose your instructor asked you to write the proper chemical formula for aluminum chloride. The first step is to look up the elemental symbol and the oxidation number of each of the elements involved. Because this compound contains only monatomic ions, we can find both of the required oxidation numbers in the first group of oxidation numbers. 

Notice that the oxidation numbers are not part of the proper chemical formula they are use to determine the ratio by which the elements combine, but they don t get written with the formula. Now, we will try a slightly harder example. Suppose you need to write the proper formula for aluminum sulfide. Once again, the first step will be to look up the proper elemental symbol and oxidation number for each of the elements in the compound. 

Write the chemical formulas that correspond to the following names (a) aluminum chloride (used in cosmetics), (h) chromium(III) oxide (a pigment for coloring pottery glazes), (c) calcium nitrate (provides a red-orange color in fireworks), and (d) ammonium sulfide (used to make synthetic flavors). 

Aluminum oxide (AI2O3) is a widely used industrial abrasive (emery, corundum), for which the specific application depends on the hardness of the crystal. What does this hardness imply about the magnitude of the lattice energy Would you have predicted from the chemical formula that AI2O3 is hard Explain. 

Mole Relationships from a Chemical Formula Aluminum oxide (AI2O3), often called alumina, is the principal raw material for the production of aluminum (Al). Alumina occurs in the minerals corundum and bauxite. Determine the moles of aluminum ions (AP+) in 1.25 mol of AI2O3. 

Write the chemical formulas for the following compounds (a) aluminum hydroxide, (b) potassium sul te, (c) copper(l) oxide, (d) zinc nitrate, (e) mercury(II) bromide, (f) iron(lll) carbonate, (g) sodium hypobromite. 

Because many ions and compounds have very similar names, there is great potential for confusing them. Write the correct chemical formulas to distinguish between (a) calcium sulfide and calcium hydrogen sulfide, (b) hydrobromic acid and bromic acid, (c) aluminum nitride and aluminum nitrite, (d) iron(II) oxide and iron(III) oxide, (e) ammonia and ammonium ion, (f) potassium sulfite and potassium bisulfite, (g) mercurous chloride and mercuric chloride, (h) chloric acid and perchloric add. 

This is another metal oxide used in thin-layer applications. The chemical formula is AI2O3. On aluminum oxide thin-layers sorption is based on partial positive and negative charges on the surface and any water sorbed thereon. In the manufacturing process aluminum oxide can be made to have a basic surface (pH 9-10), a neutral surface (pH 7-8), or an acidic surface (pH 4-4.5). This allows for a different type of adsorption separation based solely on surface pH. Other properties of the different aluminas available for TLC are shown in Table 2. The different pore size and surface area types will also impart different separation characteristics to these sorbent layers. Layers of this sorbent are available with and without binders both organic and inorganic. A whole range of... 

Weighing the Matter By knowing the masses of aluminum and Ironflll) oxide reacting ir this spectacular chemical change, you also know the number of atoms of each and can predict the masses of aluminum oxide and iron metal that form. In this chapter, you ll learn the arithmetic of chemical formulas and reactions. 

Chemical Names Boehmite alumina, alumina monohydrate, aluminum oxide hydroxide Trade Name Dispal Alumina Function in Formula Thickener... 

The chemical formula of a substance is a notation that uses atomic symbols with numerical subscripts to convey the relative proportions of atoms of the different elements in the substance. Consider the formula of aluminum oxide, AI2O3. This means that the compound is composed of aluminum atoms and oxygen atoms in the ratio 2 3. Consider the formula for sodium chloride, NaCl. When no subscript is written... 

Aluminum oxide is an ionic compound. Sketch the transfer of electrons from aluminum atoms to oxygen atoms that accounts for the chemical formula of the compound AljOj. 

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