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Bacterial digestion is an economical method of sewagetreatment. The reaction
is an intermediate step in the conversion of the nitrogenin organic compounds into nitrate ions. How muchbacterial tissue is produced in a treatment plant for every
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Chemical Principles
- In the synthesis of ammonia, if [H2]/t = 4.5 104 mol/L min, what is [NH3]/t? N2(g) + 3 H2(g) 2 NH3(g)arrow_forwardIn the smelting of iron ores, the reduction of iron oxides in a blast furnace is accompanied by the oxidation of CO(g) to CO2(g). The three reactions leading to the formation of Fe are: Reaction (i): 3 Fe,03(s) + CO(g) → 2 Fe304(s) + CO2(9) Reaction (ii): Fe3O4(s) + CO(g) → 3 FeO(s) + CO2(9) Reaction (iii): FeO(s) + CO(g) → Fe (s) + CO2(g) The graph below shows the variation of the Gibbs energy change with temperature for each of these reactions. Which one of the following statements is INCORRECT? 50 (iii) (ii) -50 -100 (i) -150 1000 2000 T/K O Reaction (iii) is spontaneous at high temperatures. OAll of the three re ons are spontaneous at 500 K. O The Keg for Reaction (i) is larger than the Keg for Reaction (ii) at all temperatures. Reactions (i) and (ii) are more favorable at high temperatures.arrow_forwardName the major organic compound formed by the following reaction: OCH 3 x OCH 3 acid (hydrolysis)arrow_forward
- 2Na + BaCl2 --> Ba + 2NACI is what type of reaction?arrow_forwardIn the smelting of iron ores, the reduction of iron oxides in a blast furnace is accompanied by the oxidation of CO(o) to CO2(9). The three reactions leading to the formation of Fe are: Reaction (i): 3 Fe,03(s) + CO(g) → 2 FezO4(s) + CO2(g) Reaction (ii): Fe304(s) + CO(9) 3 FeO(s) + CO29) Reaction (ii): FeO(s) + CO(a) → Fe (s) + CO2(9) The graph below shows the variation of the Gibbs energy change with temperature for each of these reactions. Which one of the following statements is INCORRECT? 50 (ii) 4G° (ii) -50 -100 (i) -150 1000 2000 T/K O Reaction (iii) is spontaneous at high temperatures. O All of the three reactions are spontaneous at 500 K. O The Keg for Reaction (i) is larger than the Keg for Reaction (ii) at all temperatures. Reactions (i) and (ii) are more favorable at high temperatures.arrow_forwardBalance the chemical equation. Au + HCI + HNO3→AUCI3 + NO + H20 Assume the coefficient of H20 is 2. What is the balanced equation? DAu +HCI +HNO3-[Auc13 +NO +H20arrow_forward
- Glucose (C6H12O6) + oxygen [cellular respiration.Balanced chemical equation:Reaction type:arrow_forwardDecomposition Reactions Carbon Reduction Reactions 2 Ag₂O(s)→ 4 Ag(s) + O₂(g) 2 MgO(s) → 2 Mg(s) + O₂(g) 2 Al₂O3(s) → 4 Al(s) + 3 O₂(g) 2 Fe₂O3(s)- 4 Fe(s) + 3 O₂(g) 2 HgO(s) → 2 Hg(1) + O₂(g) 2 Cr₂O3(s) → 4 Cr(s) + 3 O₂(g) Temperature Clear Graph 300 K AH° AS° (kJ) (J/K.mol) +62.2 +132.7 +1202.4 +216.7 +3351.4 +546.8 +1648.4 +551.5 +181.7 +2269.4 +286.8 +548.4 AG°(kJ) -1000 0 1000 2000 3000 300 Temperature (K) 2000 The metals Mg and Al, like most metals in groups 1A, 2A, and 3A of the periodic table, cannot be obtained by chemical reduction with carbon at reasonable temperatures. What process is used to obtain these metals from their ores?arrow_forwardPredict the change (left, right or no change) when each of the following stresses is placed on the reaction: 6 CO2 (g) + 6 H2O (g) + heat → CCH12OS (s) + 6 02 (g)arrow_forward
- 7. A human needs about 120. grams of glucose per day. How many 6 CO2 + 6 H20 > C$H12O6 + 6 O2 grams of carbon dioxide are used by plants to produce this amount of glucose?arrow_forwardHematite, Fe203, is an important ore of iron. (An ore is a natural substance from which the metal can be profitably obtained.) The free metal is obtained by reacting hematite with carbon monoxide, CO, in a blast furnace. Carbon monoxide is formed in the furnace by partial combustion of carbon. The reaction is Fe203(s) + 3CO(g) → 2Fe(s) + 3CO2(g) How many grams of iron can be produced from 1.17 kg Fe203? g Fearrow_forwardReactions Which type of reaction is indicated by the following formula: 2A920 → 4Ag + O2 O Replacement O Decomposition O Synthesisarrow_forward
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