electrochemistry/corrosion question
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electrochemistry/corrosion question
The concept of "cathodic protection" or a "sacrificial anode" operates on the basis of...
10.1. (Multiple choice) Which one of the following statements is true? (a) The corrosion of a metal immersed in acid requires the presence of oxygen. (b) Cathodic protection involves attaching a...
10.1. (Multiple choice) Which one of the following statements is true? (a) The corrosion of a metal immersed in acid requires the presence of oxygen. (b) Cathodic protection involves attaching a more cathodic material to a metal that you want to protect from corrosion. If two pieces of clean, unpainted 1040 steel sheet are immersed near to each other (but not touching) in seawater, they will corrode at the same rate. (c) (d) Corrosion always involves the transfer of electrons....
6. To have a successful coating are: a) good choice for coating material. b) good coating...
6. To have a successful coating are: a) good choice for coating material. b) good coating technique. c) good surface preparation or good cleaning. d) all of the above 7. Coating layer must be a) Active or passive with environment. b) inert or non- passive with environment. c) inert or passive with environment. d) both a and b. 8. pH of normal sea water is a) 4.0. b) 7.0 c) less than 7.0. d) more than 7.0. 9. Good set-up...
Test IV (Electrochemistry) 2018 Fall What is the oxidation number for the Which of the following...
Test IV (Electrochemistry) 2018 Fall What is the oxidation number for the Which of the following is true concerning a galvanic cell? (A) Oxidation occurs at the anode and is 1. 8. underlined manganese in Mn04 (A)-8 (8)-2 (C)-1 (D)4 (E) 7 where anions move towards where anions move towards where cations move towards where anions move towards where anions move towards 2. When balancing the below half-reaction in acidic solutionelectrons are added to the (B) Oxidation occurs at the...
EXPERIMENT: 26 ELECTROCHEMISTRY: GALVANIC AND ELECTROLYTIC CELLS Materials Required : 50 mL beake...
Help please
EXPERIMENT: 26 ELECTROCHEMISTRY: GALVANIC AND ELECTROLYTIC CELLS Materials Required : 50 mL beakers (2) test tubes sandpaper glass U-tube cotton voltmeter 9.0 V battery connecting wires with alligator clips (2) thermometer iron nail paper clips (2) copper wire magnesium ribbon magnesium sulfate (MgSO) copper sulfate pentahydrate (CuSO, 5H,O) sodium chloride (NaCI) saturated sodium chloride (NaCI)solution phenolphthalein indicator SAFETY PRECAUTIONS: EYE PROTECTION MUST BE WORN AT ALL TIMES IN LABORATORY. Purpose of Experiment: Oxidation-reduction reactions will be performed and...
QUESTION 1 1 points The addition of some metallic elements to steels affect the properties of...
QUESTION 1 1 points The addition of some metallic elements to steels affect the properties of the metal. The ability to alter the steel grain structure can be effected by the elements: Aluminum, Vanadium Chromium, Copper, Molybdenum, Tungsten Cobalt, Nickel Lead, Tellurium QUESTION 2 1 points An alloying element is any element added during the manufacture of steel that is not one of four (4) non-metals. An example of an alloying element IS. Tellurium Carbon O Silicon Sulfur QUESTION 3...
please and please choose the right answer and please make it clear for my understanding 1-Which...
please and please choose the right answer and please make it clear for my understanding 1-Which of the following statements are false? Oxidation and reduction half-reactions occur at electrodes in electrochemical cells All electrochemical reactions involve the transfer of electrons Oxidation occurs at the anode All voltaic (galvanic) cells involve the use of electricity to initiate nonspontaneous chemical reactions Reduction occurs at the cathode 2-During the electrolysis of aqueous KCl solution using inert electrodes, gaseous hydrogen is evolved at one...
environmental economics. 5 pts Question 11 (TCO 4) Why does the MAC curve increase at an...
environmental economics.
5 pts Question 11 (TCO 4) Why does the MAC curve increase at an increasing rate? 28 @ The cost of increasing pollution abatement trom 8 % to 9% is lower than the cost of increasing pollution abatement from 80 % to 81 % The cost of increasing pollution abatement from 8% to 9 % is higher than the cost of increasing pollution abatement from 80 % to 81 % O None of the above @All of the...
PLS ANSWER ALL ASAP!!! THANKS!! QUESTION 1 Which of the following is included in the calculation...
PLS ANSWER ALL ASAP!!! THANKS!!
QUESTION 1 Which of the following is included in the calculation of national income? indirect business taxes O compensation of employees rental income all of the above none of the above none of the above QUESTION 4 Rapid growth of the money supply might seem appropriate to economists, because Keynesian; the resulting inflation will have no effect on real output Keynesian; it can hasten the economy's return to a long-run equilibrium classical; stabilizing fluctuations contributes...
What are the coefficients for the following reaction when it is properly balanced? _nitric acid +...
What are the coefficients for the following reaction when it is properly balanced? _nitric acid + __sodium hydroxide _sodium nitrate +_water O 1, 1, 1,1 2.3, 2.2 5, 2, 2.1 none of the above 2.1.1.1 Question 4 Which of the following is an lonic compound? CH20 MgCl2 PCIS SCI2 CI20 Question 5 Suppose that in anionic compound, "M" represents a metal that could form more than one type of lon. In the formula MF, the charge of the Mon would...
True and false 5 and 6 multiple choices 1- just need one answer question 30 2-...
True and false 5 and 6
multiple choices
1- just need one answer question 30
2- just need an answer question 40
T F 5. Foreign competition is unfair and foreign wages are too low. TF 6. A current account deficit means foreigners don't like domestic goods. euro/$ S/euro D D dollars euro 30. Floating exchange rates: a. are set by governments b. allow domestic monetary control c. encourage policy coordination d. all of the above e. none of the...
10.1. (Multiple choice) Which one of the following statements is true? (a) The corrosion of a metal immersed in acid requires the presence of oxygen. (b) Cathodic protection involves attaching a more cathodic material to a metal that you want to protect from corrosion. If two pieces of clean, unpainted 1040 steel sheet are immersed near to each other (but not touching) in seawater, they will corrode at the same rate. (c) (d) Corrosion always involves the transfer of electrons....
6. To have a successful coating are: a) good choice for coating material. b) good coating technique. c) good surface preparation or good cleaning. d) all of the above 7. Coating layer must be a) Active or passive with environment. b) inert or non- passive with environment. c) inert or passive with environment. d) both a and b. 8. pH of normal sea water is a) 4.0. b) 7.0 c) less than 7.0. d) more than 7.0. 9. Good set-up...
Test IV (Electrochemistry) 2018 Fall What is the oxidation number for the Which of the following is true concerning a galvanic cell? (A) Oxidation occurs at the anode and is 1. 8. underlined manganese in Mn04 (A)-8 (8)-2 (C)-1 (D)4 (E) 7 where anions move towards where anions move towards where cations move towards where anions move towards where anions move towards 2. When balancing the below half-reaction in acidic solutionelectrons are added to the (B) Oxidation occurs at the...
Help please
EXPERIMENT: 26 ELECTROCHEMISTRY: GALVANIC AND ELECTROLYTIC CELLS Materials Required : 50 mL beakers (2) test tubes sandpaper glass U-tube cotton voltmeter 9.0 V battery connecting wires with alligator clips (2) thermometer iron nail paper clips (2) copper wire magnesium ribbon magnesium sulfate (MgSO) copper sulfate pentahydrate (CuSO, 5H,O) sodium chloride (NaCI) saturated sodium chloride (NaCI)solution phenolphthalein indicator SAFETY PRECAUTIONS: EYE PROTECTION MUST BE WORN AT ALL TIMES IN LABORATORY. Purpose of Experiment: Oxidation-reduction reactions will be performed and...
QUESTION 1 1 points The addition of some metallic elements to steels affect the properties of the metal. The ability to alter the steel grain structure can be effected by the elements: Aluminum, Vanadium Chromium, Copper, Molybdenum, Tungsten Cobalt, Nickel Lead, Tellurium QUESTION 2 1 points An alloying element is any element added during the manufacture of steel that is not one of four (4) non-metals. An example of an alloying element IS. Tellurium Carbon O Silicon Sulfur QUESTION 3...
environmental economics.
5 pts Question 11 (TCO 4) Why does the MAC curve increase at an increasing rate? 28 @ The cost of increasing pollution abatement trom 8 % to 9% is lower than the cost of increasing pollution abatement from 80 % to 81 % The cost of increasing pollution abatement from 8% to 9 % is higher than the cost of increasing pollution abatement from 80 % to 81 % O None of the above @All of the...
PLS ANSWER ALL ASAP!!! THANKS!!
QUESTION 1 Which of the following is included in the calculation of national income? indirect business taxes O compensation of employees rental income all of the above none of the above none of the above QUESTION 4 Rapid growth of the money supply might seem appropriate to economists, because Keynesian; the resulting inflation will have no effect on real output Keynesian; it can hasten the economy's return to a long-run equilibrium classical; stabilizing fluctuations contributes...
What are the coefficients for the following reaction when it is properly balanced? _nitric acid + __sodium hydroxide _sodium nitrate +_water O 1, 1, 1,1 2.3, 2.2 5, 2, 2.1 none of the above 2.1.1.1 Question 4 Which of the following is an lonic compound? CH20 MgCl2 PCIS SCI2 CI20 Question 5 Suppose that in anionic compound, "M" represents a metal that could form more than one type of lon. In the formula MF, the charge of the Mon would...
True and false 5 and 6
multiple choices
1- just need one answer question 30
2- just need an answer question 40
T F 5. Foreign competition is unfair and foreign wages are too low. TF 6. A current account deficit means foreigners don't like domestic goods. euro/$ S/euro D D dollars euro 30. Floating exchange rates: a. are set by governments b. allow domestic monetary control c. encourage policy coordination d. all of the above e. none of the...
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