ALUMINUM PRE-LABORATORY QUESTIONS 1. In this experiment, aluminum will be converted into potassium aluminum sulphate dodecahydrate. The process requires three reactions. Balance these three reactions. H2 (a) KAI(OH)4 (aa) A] Al (s) KOH (aq) +HOH () (d H20 () KAI(S04)2 (aq) Bl KAI(OH)4 (aq) H2SO4 (aa) + KAI(SO4)2 12 H20 (s) H20 () C] KAI(SO4)2 (aq) + 2. Under experimental procedures #2 and #3, the experiment calls for reacting aluminum with water and potassium hydroxide. See 1A above for the equation. A student used the following quantities: W 3.00 grams AI 15.0 mL of 8.00 M KOH 75.0 mL of distilled HOH Which of the reactants is the limiting reactant? (Mathematically document your answer.) Show your work and set-up. .S 149

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.