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what are 17 and 18? Question 17 (10 points) A constant current is passed through a...
what are 17 and 18?
Question 17 (10 points) A constant current is passed through a solution of Agt in an electrolytic cell. In 3.0 minutes, 0.65 g of silver is deposited at the cathode. The number of moles of electrons passed into the Agt solution is mole. (Please enter your answer in decimal form, such as 0.021, and keep 2 significant figures.) The total coulombs of charge passed into the Cu2+ solution is C. (Please enter your answer in...
Question 18 (5 points) A voltaic cell is set up with silver-silver ion as one electrode...
Question 18 (5 points) A voltaic cell is set up with silver-silver ion as one electrode and iron(II)-iron(III) ion as the other. The standard cell potential is V. Please enter your answer in decimal form, such as 0.38, and keep the correct number of significant figures.
Please check answers and explain if wrong and what correct answer is. Thank you!! Question 2...
Please check answers and explain if wrong and what correct
answer is. Thank you!!
Question 2 (4 points) Saved An electrochemical cell in which an external current source supplies the energy for the electron transfer is an) electrolytic cell concentration cell combination cell voltaic cell half cell Question 3 (4 points) Saved Which of the following half reactions could occur at the cathode of an electrochemical cell? Cu ----> Cu2+ + 2e Cu + 2e ----> Cu2+ two of these...
Part A and B Please show all of the steps Analysis of Electroplating When electricity (the flow of electrons) is...
Part A and B
Please show all of the steps
Analysis of Electroplating When electricity (the flow of electrons) is passed through a solution, it causes an oxidation-reduction (redox) reaction to occur. If the solution contains a metal cation such as Ag+, the flow of electrons will reduce the silver ion, causing solid silver to plate onto the electrode. The amount of metal plated depends on the number of electrons passed. The total charge of a mole of electrons is...
Part C Please show all of the steps Previous Answers Review I Constants 1 Periodic Correct...
Part C
Please show all of the steps
Previous Answers Review I Constants 1 Periodic Correct Part with a power supply able to produce 125 A of current, how long must the nails stay in the electrolysis chamber to receive 3.25x10° C of charge Express your answer to three significant figures and include the appropriate units. View Available Hint(s) WAO ? Value Submit Part D Identify the anode and cathode when plating an ironnal with inc View Available Hints) in...
please help me.I answered them, but not sure about my answers Since you are measuring pressure...
please help me.I answered them, but not sure about my answers
Since you are measuring pressure in mmHg, which numerical value of R should you us (enter the numerical value only, no units and use three significant figures)? 0.082 Question 2 1 pts Suppose you have a stoppered flask containing CO2 gas at room temperature and pressure. If the volume of your stoppered flask is 300.0 mL, the pressure in the room is 770. mm Hg, and the temperature in...
Question 20 (5 points) Using the following standard reduction potentials: PbO2 + 4H+ + SO42- +...
Question 20 (5 points) Using the following standard reduction potentials: PbO2 + 4H+ + SO42- + 2e → PbSO4(s) + 2H20 E° = +1.69 V PbO2 + 4H+ + 2e → Pb2+ + 2H20 E° = +1.46 V The standard cell voltage for the reaction PbSO4(s) Pb2+ + SO42- is V. Please enter your answer in decimal form, such as 2.5, and keep the correct number of significant figures.
Question 20 (5 points) Using the following standard reduction potentials: PbO2 + 4H+ + SO42- +...
Question 20 (5 points) Using the following standard reduction potentials: PbO2 + 4H+ + SO42- + 2e → PbSO4(s) + 2H20 E° = +1.69 V PbO2 + 4H+ + 2e Pb2+ + 2H20 E° = +1.46 V is The standard cell voltage for the reaction PbSO4(s) → Pb2+ + SO42- V. Please enter your answer in decimal form, such as 2.5, and keep the correct number of significant figures.
3 atempi 3 attempts left Check my work Be sure to answer all parts. Please report...
3 atempi 3 attempts left Check my work Be sure to answer all parts. Please report your answer to the correct number of significant figures. Determine the Ky of a weak base if a 0.613 M aqueous solution of the base at 25°C has a pH of 10.88. | x 10 (Enter your answer in scientific notation.)
please help solve Saved Help Save & Exit Submit Check my word Estimate the pH of...
please help solve
Saved Help Save & Exit Submit Check my word Estimate the pH of a 3.13 * 10-3 M NH3 solution. You can calculate the highest possible pH, knowing that the actual value will be lower Your answer should contain 3 decimal places as this corresponds to 3 significant figures when dealing with logs. pH will be lower than es < Prev 26 of 54 Next >
what are 17 and 18?
Question 17 (10 points) A constant current is passed through a solution of Agt in an electrolytic cell. In 3.0 minutes, 0.65 g of silver is deposited at the cathode. The number of moles of electrons passed into the Agt solution is mole. (Please enter your answer in decimal form, such as 0.021, and keep 2 significant figures.) The total coulombs of charge passed into the Cu2+ solution is C. (Please enter your answer in...
Question 18 (5 points) A voltaic cell is set up with silver-silver ion as one electrode and iron(II)-iron(III) ion as the other. The standard cell potential is V. Please enter your answer in decimal form, such as 0.38, and keep the correct number of significant figures.
Please check answers and explain if wrong and what correct
answer is. Thank you!!
Question 2 (4 points) Saved An electrochemical cell in which an external current source supplies the energy for the electron transfer is an) electrolytic cell concentration cell combination cell voltaic cell half cell Question 3 (4 points) Saved Which of the following half reactions could occur at the cathode of an electrochemical cell? Cu ----> Cu2+ + 2e Cu + 2e ----> Cu2+ two of these...
Part A and B
Please show all of the steps
Analysis of Electroplating When electricity (the flow of electrons) is passed through a solution, it causes an oxidation-reduction (redox) reaction to occur. If the solution contains a metal cation such as Ag+, the flow of electrons will reduce the silver ion, causing solid silver to plate onto the electrode. The amount of metal plated depends on the number of electrons passed. The total charge of a mole of electrons is...
Part C
Please show all of the steps
Previous Answers Review I Constants 1 Periodic Correct Part with a power supply able to produce 125 A of current, how long must the nails stay in the electrolysis chamber to receive 3.25x10° C of charge Express your answer to three significant figures and include the appropriate units. View Available Hint(s) WAO ? Value Submit Part D Identify the anode and cathode when plating an ironnal with inc View Available Hints) in...
please help me.I answered them, but not sure about my answers
Since you are measuring pressure in mmHg, which numerical value of R should you us (enter the numerical value only, no units and use three significant figures)? 0.082 Question 2 1 pts Suppose you have a stoppered flask containing CO2 gas at room temperature and pressure. If the volume of your stoppered flask is 300.0 mL, the pressure in the room is 770. mm Hg, and the temperature in...
Question 20 (5 points) Using the following standard reduction potentials: PbO2 + 4H+ + SO42- + 2e → PbSO4(s) + 2H20 E° = +1.69 V PbO2 + 4H+ + 2e → Pb2+ + 2H20 E° = +1.46 V The standard cell voltage for the reaction PbSO4(s) Pb2+ + SO42- is V. Please enter your answer in decimal form, such as 2.5, and keep the correct number of significant figures.
Question 20 (5 points) Using the following standard reduction potentials: PbO2 + 4H+ + SO42- + 2e → PbSO4(s) + 2H20 E° = +1.69 V PbO2 + 4H+ + 2e Pb2+ + 2H20 E° = +1.46 V is The standard cell voltage for the reaction PbSO4(s) → Pb2+ + SO42- V. Please enter your answer in decimal form, such as 2.5, and keep the correct number of significant figures.
3 atempi 3 attempts left Check my work Be sure to answer all parts. Please report your answer to the correct number of significant figures. Determine the Ky of a weak base if a 0.613 M aqueous solution of the base at 25°C has a pH of 10.88. | x 10 (Enter your answer in scientific notation.)
please help solve
Saved Help Save & Exit Submit Check my word Estimate the pH of a 3.13 * 10-3 M NH3 solution. You can calculate the highest possible pH, knowing that the actual value will be lower Your answer should contain 3 decimal places as this corresponds to 3 significant figures when dealing with logs. pH will be lower than es < Prev 26 of 54 Next >
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