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2. Cadmium is a toxic metal used to produce batteries and some plastics. Cadmium ion (Cd?)...
3. At high pH, some metals precipitate as metal hydroxides. For cadmium, the equilibrium constant for...
3. At high pH, some metals precipitate as metal hydroxides. For cadmium, the equilibrium constant for the reaction is 5.5 x 1013 Cd" +20H' Cd(OH),(s) a. If the pH of the water is maintained at 8.0, what is the dissolved cadmium concentration in mg/L? b. What pH is required to meet a goal of 100 mg/L dissolved cadmium?
please show full working out to this question, thanks (c) Cadmium is a toxic metal and a major component of lightweight batteries. There has been growing concern regarding the disposal of batteries i...
please show full working out to this question,
thanks
(c) Cadmium is a toxic metal and a major component of lightweight batteries. There has been growing concern regarding the disposal of batteries in landfill sites and the possibility of a major contamination problem as the batteries corrode. The data shown below were obtained by amperometric analysis of samples as part of a monitoring procedure established at a local landfill site. [Cd] / μgLI | 0.0 | 5.0 | 10.0 |...
5. The nickel-cadmium battery, despite issues with the toxicity of Cd, is still used in some...
5. The nickel-cadmium battery, despite issues with the toxicity of Cd, is still used in some rechargeable batteries because it has very consistent voltage over long discharge times. a) Using only half-cell reactions given in Table 16.1, write the overall reaction and give the highest AV° value possible for a NiCd battery. b) The actual half-cell reactions used in a Nicd battery are: Ca(OH)2(8) + 2e → Cds + 2OH(aq) (Vº = -0.86V) NiO(OH)) + H2O) +e Ni(OH)2(s) + OH(aq)...
#3 cannot use Cd(NH3)42+ or any cadmium salt CdC2O4(s) + 4 NH3 (aq) ←→ Cd(NH3)4+2 (aq)-C204-2(aq)...
#3 cannot use Cd(NH3)42+ or any
cadmium salt
CdC2O4(s) + 4 NH3 (aq) ←→ Cd(NH3)4+2 (aq)-C204-2(aq) Note: C2o2(aq) is the oxalate ion 1. If solid CdC204(s) is added, the equilibrium will a. shift toward the reactants b. shift toward the products c. not shift at all d. produce some of the solid. 2. If NH3(aq) is added the equilibrium will a. shift toward the reactants b. shift toward the products c. not shift at all d. cause some solid to...
At a metal plating plant has a floor area of 2 x 104 m2 and a ceiling Some of the metals that wil...
explain step by step
at a metal plating plant has a floor area of 2 x 104 m2 and a ceiling Some of the metals that will be used in the plating operations are known to as an impurity. The health and safety engineer at the plant is currently 5. The processing room height of 6 m. contain arse concerned that as metals are heated during the plating process arsenic vapors will be released into the work area. A preliminary...
1 2 3 4 5 6 7 8 9 Part A Which of the following is/are...
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Part A Which of the following is/are means whereby a catalyst can lower the activation energy of a reaction? quantum tunneling decreasing the number of reactive molecules permanently binding substrates inefficient collisions altering the temperature within the cell to one appropriate for reactions to proceed Subrnit Request Answer Part A An enzyme Obinds substrates in a manner that facilitates the formation of product decreases the rate of a reaction. is always...
1. A catalyst enhances the reaction rate by: a. Adding energy to the reaction b. Increasing...
1. A catalyst enhances the reaction rate by: a. Adding energy to the reaction b. Increasing the activation energy required for the reaction c. Reducing the activation energy required for the reaction d. Improving binding of the product to the active site 2. Numerical answer: During aerobic respiration how many ATP molecules are produced by the oxidation of a single molecule of pyruvate? 3. The trace elements magnesium and zinc, which are required for bacterial growth, are typically used as:...
A. Choose anly one correcet answer for each of the following questions (4 pts cach). AL Some and ...
A. Choose anly one correcet answer for each of the following questions (4 pts cach). AL Some and KM values are shown below for enzyme-substrate pairs. Which of the following enzymes is most efficient in converting the substrate into the product? b) kes.-4x10s s", KM-0.026 M d)k,,-5.7 x1o's", K-2x10s M c)人at-900 s", KM-2.5 × 10.5 M A2. Which of the following enzyme reaction mechanisms has multiple substrates? a) induced-fit e) Michaclis-Menton b) random sequential d) reversible covalent modification e) None...
high and detecting one product at a time Question 77 The initial velocity of an enzyme...
high and detecting one product at a time Question 77 The initial velocity of an enzyme reaction (vo) describes A) The concentration of the enzyme at maximal velocity B) The concentration of substrate at maximal velocity C) The concentration of both at the start of the reaction D) The rate of the reaction when the substrate and enzyme are first med Question 78 What is the shape of a typical plot of initial rate vs substrate concentration tres kinetics? A)...
Biochemistry. Please answer all completely. 13. Identify the electrophilic center and nucleophile in the below image...
Biochemistry. Please answer all completely.
13. Identify the electrophilic center and nucleophile in the below image : R 14. Give an example of amino acids with R group shown below which can function as nucleophile during enzyme catalysis. Nucleophiles Negatively charged oxygen (as in an unprotonated hydroxyl group or an ionized carboxylic acid) Negatively charged sulfhydryl Uncharged amine group HN Imidazole 15. Identify the amino acids with the following side chains and also define if they will work as acid...
3. At high pH, some metals precipitate as metal hydroxides. For cadmium, the equilibrium constant for the reaction is 5.5 x 1013 Cd" +20H' Cd(OH),(s) a. If the pH of the water is maintained at 8.0, what is the dissolved cadmium concentration in mg/L? b. What pH is required to meet a goal of 100 mg/L dissolved cadmium?
please show full working out to this question,
thanks
(c) Cadmium is a toxic metal and a major component of lightweight batteries. There has been growing concern regarding the disposal of batteries in landfill sites and the possibility of a major contamination problem as the batteries corrode. The data shown below were obtained by amperometric analysis of samples as part of a monitoring procedure established at a local landfill site. [Cd] / μgLI | 0.0 | 5.0 | 10.0 |...
5. The nickel-cadmium battery, despite issues with the toxicity of Cd, is still used in some rechargeable batteries because it has very consistent voltage over long discharge times. a) Using only half-cell reactions given in Table 16.1, write the overall reaction and give the highest AV° value possible for a NiCd battery. b) The actual half-cell reactions used in a Nicd battery are: Ca(OH)2(8) + 2e → Cds + 2OH(aq) (Vº = -0.86V) NiO(OH)) + H2O) +e Ni(OH)2(s) + OH(aq)...
#3 cannot use Cd(NH3)42+ or any
cadmium salt
CdC2O4(s) + 4 NH3 (aq) ←→ Cd(NH3)4+2 (aq)-C204-2(aq) Note: C2o2(aq) is the oxalate ion 1. If solid CdC204(s) is added, the equilibrium will a. shift toward the reactants b. shift toward the products c. not shift at all d. produce some of the solid. 2. If NH3(aq) is added the equilibrium will a. shift toward the reactants b. shift toward the products c. not shift at all d. cause some solid to...
explain step by step
at a metal plating plant has a floor area of 2 x 104 m2 and a ceiling Some of the metals that will be used in the plating operations are known to as an impurity. The health and safety engineer at the plant is currently 5. The processing room height of 6 m. contain arse concerned that as metals are heated during the plating process arsenic vapors will be released into the work area. A preliminary...
1
2
3
4
5
6
7
8
9
Part A Which of the following is/are means whereby a catalyst can lower the activation energy of a reaction? quantum tunneling decreasing the number of reactive molecules permanently binding substrates inefficient collisions altering the temperature within the cell to one appropriate for reactions to proceed Subrnit Request Answer Part A An enzyme Obinds substrates in a manner that facilitates the formation of product decreases the rate of a reaction. is always...
1. A catalyst enhances the reaction rate by: a. Adding energy to the reaction b. Increasing the activation energy required for the reaction c. Reducing the activation energy required for the reaction d. Improving binding of the product to the active site 2. Numerical answer: During aerobic respiration how many ATP molecules are produced by the oxidation of a single molecule of pyruvate? 3. The trace elements magnesium and zinc, which are required for bacterial growth, are typically used as:...
A. Choose anly one correcet answer for each of the following questions (4 pts cach). AL Some and KM values are shown below for enzyme-substrate pairs. Which of the following enzymes is most efficient in converting the substrate into the product? b) kes.-4x10s s", KM-0.026 M d)k,,-5.7 x1o's", K-2x10s M c)人at-900 s", KM-2.5 × 10.5 M A2. Which of the following enzyme reaction mechanisms has multiple substrates? a) induced-fit e) Michaclis-Menton b) random sequential d) reversible covalent modification e) None...
high and detecting one product at a time Question 77 The initial velocity of an enzyme reaction (vo) describes A) The concentration of the enzyme at maximal velocity B) The concentration of substrate at maximal velocity C) The concentration of both at the start of the reaction D) The rate of the reaction when the substrate and enzyme are first med Question 78 What is the shape of a typical plot of initial rate vs substrate concentration tres kinetics? A)...
Biochemistry. Please answer all completely.
13. Identify the electrophilic center and nucleophile in the below image : R 14. Give an example of amino acids with R group shown below which can function as nucleophile during enzyme catalysis. Nucleophiles Negatively charged oxygen (as in an unprotonated hydroxyl group or an ionized carboxylic acid) Negatively charged sulfhydryl Uncharged amine group HN Imidazole 15. Identify the amino acids with the following side chains and also define if they will work as acid...
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