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- Substances that poison a catalyst pose a major concern for many engineering designs, including those for catalytic converters. One design option is to add materials that react with potential poisons before they reach the catalyst. Among the commonly encountered catalyst poisons are silicon and phosphorus, which typically form phosphate or silicate ions in the oxidizing environment of an engine. Group 2 elements are added to the catalyst to react with these contaminants before they reach the working portion of the catalytic converter. If estimates show that a catalytic converter will be exposed to 625 g of silicon during its lifetime, what mass of beryllium would need to be included in the design?The introduction to this chapter says that "we live immersed in a gaseous solution.” What dues. that mean?For each of the following reactions, indicate if there is something wrong with the reaction. If something is wrong, say what it is.a) 2H2(g) + O2(g) 2H2O(l)b) C(s) + H2O(p) CO(g) + H2(g)c) N2(g) + H2(g) NH3(g)d) Cℓ2O7() + H2O(l) 2HBrO4(aq)
- One of the many remarkable enzymes in the human bodyis carbonic anhydrase, which catalyzes the interconversionof carbon dioxide and water with bicarbonate ionand protons. If it were not for this enzyme, the body couldnot rid itself rapidly enough of the CO2 accumulated bycell metabolism. The enzyme catalyzes the dehydration(release to air) of up to 107 CO2 molecules per second.Which components of this description correspond to theterms enzyme, substrate, and turnover number?(a) increasing the pressure of NO2 from 0.3 atm to 0.9 atm The rate (increase),(decrease) by a factor of . (b) increasing the concentration of CO from 0.03 M to 0.06 M The rate (increase),(decrease) by a factor of .For the reaction between hydrogen gas and fluorine gas the following data was collectedH2(g) + F2(g)--> 2HF(g)
- A flask is charged with 0.110 mol of A and allowed to react to form B according to the following hypothetical gas-phase reaction. A(g) B(g) The following data are collected. times (s) 0 40 80 120 160 moles of A 0.110 0.066 0.042 0.027 0.016 (a) Calculate the number of moles of B at each time in the table.0 s mol40 s mol80 s mol120 s mol160 s mol(b) Calculate the average rate of disappearance of A for each 40 s interval, in units of mol/s.0 - 40 s mol/s40 - 80 s mol/s80 - 120 s mol/s120 - 160 mol/s mol/s13. A mixture of Co(g) and Ozlg) is placed in a rigid, sealed container as shown in the particle diagram. The Co(g) reacts with the 02(g) according to the following reaction. 2c0(g) + O2(g) → 2CO2(g) Which of the following diagrams correctly illustrates the reaction mixture after the reaction goes to completion? 000 00 00 000 (A) (C) 00 000 000 000 000 000 000 00 00 000 000 000 000 (D) 000 000 (B) C2021 Illuminate Education TM Inc. DELL F1 F2 F3 F4 6x F5 F6 F9 F10 F11 Priscr %23 24 & 2 4 6 80 W T Y G K 2What is the reaction profile for the following exothermic chemical reaction: 4 HCl(g) + O2(g) 2 Cl 2(g) + 2 H₂O(g)? A D E Graph (a) Graph (b) Graph (c) Graph (d) Graph (e) e Energy Progress of reaction Progress of reaction (b) Energy Progress of reaction Progress of reaction Energy *** Progress of reaction
- For the reaction CH4(g) +2O2(g) ⇄CO2(g)+2H20(l) Show w arrow how to reduce the following stresses for the reaction (A)decrease the total volume of the system (b) additional O2(g) is added to the system12. Calcium chloride is used:(There may be multiple correct answers!) A) As a hemostatic agent B) As an antidote for poisoning with salts of heavy metals B) As an antihistamine D) In dentistry - for taking impressions from the jaws E) In surgical practice - for blood clotting.Heat of Neutralization Initial temp of HCI solution Initial temp of NaOH solution Average initial temperature Final temp of neutralized mixture Change in temperature QH₂0 for the reaction (get mass using 50.0 mL solution and d= 1.02 g/mL) AHSolution (eqn 4) AH per mole istem brs 1915w to studseqmet munditiup3 25.9°C 24.9 °C 25.4 °C (E 360 m °C to on aitoaga 10.6 °C 2289.708 1 -2259.708 1 kJ/mol