Aluminum was obtained for the first time in 1827 (...). Its main ore is bauxite, formed by aluminum oxide (...). The treatment of this oxide with hydrochloric acid generates aluminum chloride, AℓCℓ₃ (aq). The main method of obtaining the metal, in that century, was to reduce this salt with potassium or sodium. This process was expensive and inefficient, being commercially unfeasible and restricting aluminum to academic studies and jewelry production. The treatment of aluminum oxide with hydrochloric acid is illustrated below.

Aℓ₂O₃ (s) + 6 HCℓ (aq) → 2 AℓCℓ₃ (aq) + 3 H₂O (ℓ)

Assuming that this reaction occurs with a consumption of 10.0 mol of Aℓ₂O₃ (s) per minute, it can be said that the rate of formation of aluminum chloride is:

5,0 mol/min.

1,0 mol/min.

10,0 mol/min.

2,0 mol/min.

20,0 mol/min.

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

Many reactions take place in aqueous solution. when potential reactants are mixed, a reaction will occur if there is some driving force that favors the formation of products. it is often convenient to categorize reactions in terms of these driving forces: precipitate formation, in which an insoluble solid is formed, weak electrolyte formation, as in a neutralization reaction involving water, or transfer of electrons, as in a redox reaction. these reactions can be represented by full molecular equations, which contain all species in the reaction mixture, or by net ionic equations, which show only the species that actually undergo a change. the latter does not contain the spectator ions, which do not undergo a net change or do not take part in the reaction. part a when the following two solutions are mixed: k2co3(aq)+fe(no3)3(aq) the mixture contains the ions listed below. sort these species into spectator ions and ions that react. drag the appropriate items to their respective bins. view available hint(s) spectator ions ions that react part b what is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? assume that the contribution of protons from h2so4 is near 100 %.ba(oh)2(aq)+h2so4(aq)→ express your answer as a chemical equation. view available hint(s) nothing provide feedback