Q: Methanol (methyl alcohol), CH3OH, is a very important industrial
Methanol (methyl alcohol), CH3OH, is a very important industrial chemical. Formerly, methanol was prepared by heating wood to high temperatures in the absence of air. The complex compounds present in...
See AnswerQ: You have probably had the unpleasant experience of discovering that a flashlight
You have probably had the unpleasant experience of discovering that a flashlight battery has gotten old and begun to leak. Is there evidence that this change is due to a chemical reaction?
See AnswerQ: The Hall process is an important method by which pure aluminum is
The Hall process is an important method by which pure aluminum is prepared from its oxide (alumina, Al2O3) by indirect reaction with graphite (carbon). Balance the following equation, which is a simpl...
See AnswerQ: Iron oxide ores, commonly a mixture of FeO and Fe2O3,
Iron oxide ores, commonly a mixture of FeO and Fe2O3, are given the general formula Fe3O4. They yield elemental iron when heated to a very high temperature with either carbon monoxide or elemental hyd...
See AnswerQ: When steel wool (iron) is heated in pure oxygen gas
When steel wool (iron) is heated in pure oxygen gas, the steel wool bursts into flame and a fine powder consisting of a mixture of iron oxides (FeO and Fe2O3) forms. Write separate unbalanced equation...
See AnswerQ: One method of producing hydrogen peroxide is to add barium peroxide to
One method of producing hydrogen peroxide is to add barium peroxide to water. A precipitate of barium oxide forms, which may then be filtered off to leave a solution of hydrogen peroxide. Write the ba...
See AnswerQ: A common experiment to determine the relative reactivity of metallic elements is
A common experiment to determine the relative reactivity of metallic elements is to place a pure sample of one metal into an aqueous solution of a compound of another metallic element. If the pure m...
See AnswerQ: When elemental boron, B, is burned in oxygen gas,
When elemental boron, B, is burned in oxygen gas, the product is diboron trioxide. If the diboron trioxide is then reacted with a measured quantity of water, it reacts with the water to form what is c...
See AnswerQ: A common experiment in introductory chemistry courses involves heating a weighed mixture
A common experiment in introductory chemistry courses involves heating a weighed mixture of potassium chlorate, KClO3, and potassium chloride. Potassium chlorate decomposes when heated, producing pota...
See AnswerQ: A common demonstration in chemistry courses involves adding a tiny speck of
A common demonstration in chemistry courses involves adding a tiny speck of manganese(IV) oxide to a concentrated hydrogen peroxide, H2O2, solution. Hydrogen peroxide is unstable, and it decomposes qu...
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