Chemistry, 19.03.2021 18:40 tasjanayroberts
O vidro e uma opçao tecnologica interessante para a construçao de casas , predios , quiosques etc., mas devemos comsiderar que . A] Nao pode ser reciclado. B] Nao pode ser utilizado como isolante acustico. C] A extraçao da materia prima do vidro pode causar impacto ambiental.
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Chemistry, 22.06.2019 04:30
When the water vapor cools it condenses select a number that represents his process on the
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Chemistry, 22.06.2019 07:00
Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant
Answers: 3
Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
O vidro e uma opçao tecnologica interessante para a construçao de casas , predios , quiosques etc.,...
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