After electroplating, why do you need to wash the copper anode and cathode with distilled water...
After electroplating, why do you need to wash the copper anode and cathode with distilled water and acetone before weighing them? what would happen if you didn't do this step before weighing them?
Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
After electroplating, why do you need to wash the copper anode
and cathode with distilled water...
Electroplating Postlab Questions 1. Suppose that you have the opportunity to be the first in the ...
Electroplating Postlab Questions 1. Suppose that you have the opportunity to be the first in the world to come up witha your data for the number of Coulombs of charge passed and the number of moles of value of Faraday's constant -never mind we al ready know it is 96485 C/mol e. Using copper actually lost from the copper electrode in your experiment, what would you predict for the value of Faradays constant? Show your work. What is the percent...
need help !! with questions 2,4,5,6 Initial Mass of Cathode electrode (Fe) Initial Mass of Anode...
need help !! with questions 2,4,5,6
Initial Mass of Cathode electrode (Fe) Initial Mass of Anode electrode (Zn) Final Mass of Cathode 10.0g 10, og 10,209 .2g Fe 3+ (aq)+32 z Fecs) Mass of Zinc deposited on cathode (g) Half reaction in Cathode Half reaction in Anode Zn(s) Eszn²+ (aq) + Ze Za(s) + 2 Fest (1) ► 2* (g) +2 Fe²+ (aq) Overall Cell Reaction Standard Cell Potential, Ecellº .440 +.763 3.32 3 (Eºcell = Ecathode - Eanode) Number...
A voltaic cell is made with a salt bridge of NaNO3 and Fe(NO3)2 for the anode cell and AgNO3 for the cathode cell. a. When constructing the cell, what impact odes the volume of solution in each of the...
A voltaic cell is made with a salt bridge of NaNO3 and Fe(NO3)2 for the anode cell and AgNO3 for the cathode cell. a. When constructing the cell, what impact odes the volume of solution in each of the beakers have on the cell potential? b. If you were to add deionized water to the solution that contains Ag+(aq), would this have any effect on the cell voltage? If so, Explain how the cell voltage would change and why. c....
3 ques plz help thank you The cathode compartment of a copper concentration cell contains 0.500...
3 ques plz help thank you
The cathode compartment of a copper concentration cell contains 0.500 L of 1.00 M [Cu2+] solution while the anode compartment contains 0.950 L of 0.0500 M. [Cu2+] with a copper electrode in each compartment. How many Coulombs of electric charge can the cell produce before the compartments reach equilibrium at 25°C? | C Calculate the atomic mass of the magnesium-27 nucleus in amu (to three decimal places) assuming that the mass of a nucleon...
7) (2 points) if we place one dialysis bag (permeable to water but not permeable to...
7) (2 points) if we place one dialysis bag (permeable to water but not permeable to Naci) filled with 10% Nach into a beaker of distilled water and wait 2 hours what is the expected result? Explain what would happen to the weight of the bag (you do not need to have specific numbers, just trends). Explain why it happened.
The experiment was taking copper II chloride, diluting it with deionized water, heating it, and adding...
The experiment was taking copper II chloride, diluting it with
deionized water, heating it, and adding a metal rod so copper could
form on it. I just need help with 3 and 4.
2. What observable evidence from the experiment do you have that shows that copper (II) chloride is, indeed, the limiting reactant? 3. Error Analysis. If in Step 9, some of the solid copper was lost and was not recovered, would this increase or decrease the percent yield?...
(1) De (2) Wh in water? (3) What is the purpose of washing with water after...
(1) De (2) Wh in water? (3) What is the purpose of washing with water after extraction with a reaction solvent? (4) What is the purpose of using a tared test tube? (5) W (6) What is the purpose of using a porous plate? (7) Why should a piece of weighing paper be put under the porous plate? (8) Why should you not touch the crystals with your fingers? fine: take up, wash with water, drying agent, absorb, mother liquor...
I really just need all the equations, please and thank you. MATERIALS: cene nitric acid, HNO,...
I really just need all the equations, please and thank you.
MATERIALS: cene nitric acid, HNO, 3.0M sodium hydroxide, NaOH 6.0 M sulfuric acid, H2SO4 zine metal DI water PROCEDURE: Make sure you record detailed observations after almost every step. You will also need to write the balanced chemical equations for almost every step. Make sure you answer any questions associated with a step 1. Weigh approximately 0.5 g of copper metal and record the weight. Place the copper in...
QUESTIONS Why do the crucible and lid need to be cooled before weighing? Be specific. 1....
QUESTIONS Why do the crucible and lid need to be cooled before weighing? Be specific. 1. Assume that you failed to clean some grease off of your crucible before doing the percent water determination. If that grease then burned off during the determi- nation, explain how the percent water you calculated would be affected (i.e., to0 low, too high, no effect). Be specific. 2. Explain how each of the following would affect the percent sulfate you calculated, i.e, too low,...
2. For the ELISA assay depicted below, what do the arrows indicate? Click here to enter...
2. For the ELISA assay depicted below, what do the arrows indicate? Click here to enter answer 3. What would happen in terms of the colorimetric readout if you forgot to do the wash step after Step D (above)? Click here to enter answer-
Electroplating Postlab Questions 1. Suppose that you have the opportunity to be the first in the world to come up witha your data for the number of Coulombs of charge passed and the number of moles of value of Faraday's constant -never mind we al ready know it is 96485 C/mol e. Using copper actually lost from the copper electrode in your experiment, what would you predict for the value of Faradays constant? Show your work. What is the percent...
need help !! with questions 2,4,5,6
Initial Mass of Cathode electrode (Fe) Initial Mass of Anode electrode (Zn) Final Mass of Cathode 10.0g 10, og 10,209 .2g Fe 3+ (aq)+32 z Fecs) Mass of Zinc deposited on cathode (g) Half reaction in Cathode Half reaction in Anode Zn(s) Eszn²+ (aq) + Ze Za(s) + 2 Fest (1) ► 2* (g) +2 Fe²+ (aq) Overall Cell Reaction Standard Cell Potential, Ecellº .440 +.763 3.32 3 (Eºcell = Ecathode - Eanode) Number...
3 ques plz help thank you
The cathode compartment of a copper concentration cell contains 0.500 L of 1.00 M [Cu2+] solution while the anode compartment contains 0.950 L of 0.0500 M. [Cu2+] with a copper electrode in each compartment. How many Coulombs of electric charge can the cell produce before the compartments reach equilibrium at 25°C? | C Calculate the atomic mass of the magnesium-27 nucleus in amu (to three decimal places) assuming that the mass of a nucleon...
7) (2 points) if we place one dialysis bag (permeable to water but not permeable to Naci) filled with 10% Nach into a beaker of distilled water and wait 2 hours what is the expected result? Explain what would happen to the weight of the bag (you do not need to have specific numbers, just trends). Explain why it happened.
The experiment was taking copper II chloride, diluting it with
deionized water, heating it, and adding a metal rod so copper could
form on it. I just need help with 3 and 4.
2. What observable evidence from the experiment do you have that shows that copper (II) chloride is, indeed, the limiting reactant? 3. Error Analysis. If in Step 9, some of the solid copper was lost and was not recovered, would this increase or decrease the percent yield?...
(1) De (2) Wh in water? (3) What is the purpose of washing with water after extraction with a reaction solvent? (4) What is the purpose of using a tared test tube? (5) W (6) What is the purpose of using a porous plate? (7) Why should a piece of weighing paper be put under the porous plate? (8) Why should you not touch the crystals with your fingers? fine: take up, wash with water, drying agent, absorb, mother liquor...
I really just need all the equations, please and thank you.
MATERIALS: cene nitric acid, HNO, 3.0M sodium hydroxide, NaOH 6.0 M sulfuric acid, H2SO4 zine metal DI water PROCEDURE: Make sure you record detailed observations after almost every step. You will also need to write the balanced chemical equations for almost every step. Make sure you answer any questions associated with a step 1. Weigh approximately 0.5 g of copper metal and record the weight. Place the copper in...
QUESTIONS Why do the crucible and lid need to be cooled before weighing? Be specific. 1. Assume that you failed to clean some grease off of your crucible before doing the percent water determination. If that grease then burned off during the determi- nation, explain how the percent water you calculated would be affected (i.e., to0 low, too high, no effect). Be specific. 2. Explain how each of the following would affect the percent sulfate you calculated, i.e, too low,...
2. For the ELISA assay depicted below, what do the arrows indicate? Click here to enter answer 3. What would happen in terms of the colorimetric readout if you forgot to do the wash step after Step D (above)? Click here to enter answer-
Most questions answered within 3 hours.
-
The cheetah is one of the fastest accelerating animals, for it
can go from rest to...
asked 46 minutes ago -
CaCO3 (s) ⇌ CaO (s) + CO2 (g)
At 637 °C, the reaction reaches equilibrium.
If...
asked 1 hour ago -
The condensate from a steam distillation contains 12.0 g of
compound A and 18.0 g of...
asked 4 hours ago -
A major economic benefit of fixed exchange rates compared to
floating rates is that
a. the...
asked 4 hours ago -
1) For this reaction,
SiCl4 (l)+ 2H2O(g) <->
SiO2 (s) + 4HCl (g) DeltaH = -127 KJ...
asked 4 hours ago -
Which of the following does NOT add to US GDP? A. Saudi Arabia
buys fighter jets...
asked 6 hours ago -
2. Describe market equilibrium in terms of the following
characteristics
d.
How supply and demand interactions...
asked 6 hours ago -
1a. Create a class named Computer
- Separate declaration from implementation (i.e. Header and CPP
files)...
asked 6 hours ago -
A medical researcher
believes that a drug changes the body's temperature. Seven test
subjects are randomly...
asked 6 hours ago -
A call option on Project Cash Flow Consulting Inc.'s stock (PCF)
has a market price of...
asked 6 hours ago -
A study on the latest fad diet claimed that the amounts of
weight lost by all...
asked 7 hours ago -
give examples of how gene expression is inherited to the next
generation?
asked 7 hours ago