A flashlight uses batteries that add up to 4.5 V and has a power output of 0.48 W. (a) How much current is drawn from the batteries?                                   _____A (b) What is the effective resistance of the flashlight? _____________Ω

Q: ELECTROCHEMISTRY: Copper was electroplated from a Cu2SO4 solution onto an electrode with an active…

A: Copper is deposited as Cu2++2e-=Cu . Which means we require 2 mole of electrons= 2×96475 C of charge…

Q: ELECTROCHEMISTRY: Copper was electroplated from a CuzsO4 solution onto an electrode with an active…

A: We will calculate charge supplied , then calculate volume of cu deposited to find thickness of cu.

Q: B. Cathodic Protection by Sacrificial Anode Material Observations Fe nail only Fe nail + Zn wire Fe…

A: Interpretation -  We have to write the different observations for the different type of material…

Q: An electroplating is conducted at a current of 10.0 A. If the surface to be electroplated with gold…

A:

Q: A “dead” 12-Volt lead/acid storage battery has 12.80 g of PbSO4 (molar mass = 303.3 g), deposited on…

A: According to Faraday's first of electrolysis, the amount of substance liberated at a particular…

Q: A current 0.25 A exits in a 60-ohm lamp. The potential difference is

A: Potential difference= current x resistance

Q: ELECTROCHEMISTRY: Copper was electroplated from a CuzsO4 solution onto an electrode with an active…

A: Answer :-  Thickness Of Cu Deposited= 0.11  --------------------------------------------------------

Q: 2- In Townsend discharge and in the steady state of plasma, electrons must reach the anode in the .…

A: In this question we have to choose correct option and also known the reason. This is mulitipart…

Q: ELECTROCHEMISTRY: Copper was electroplated from a Cuzs04 solution onto an electrode with an active…

A:

Q: Describe briefly an experiment to determine the conditions necessary for rusting…

A: When metals come into contact with air, water (or moisture) present in the atmosphere over time,…

Q: ELECTROCHEMISTRY: Copper was electroplated from a Cu2sO4 solution onto an electrode with an active…

A:

Q: time required when time 3. It is desired to required plate an Al coil with [ Select ] when 10 mg…

A: Given: Amount of Gold to be deposited = 10mg

Q: The _____ in a _____ voltammogram is related to the ____  a.  limiting current, cyclic,…

A: Voltammogram is generally obtained from voltammetry which is an electrochemical measurement. A…

Q: Part A The surface area of an object to be gold plated is 49.9 cm? and the density of gold is 19.3 g…

A: Given: The surface area of the area to be gold plated = 49.9 cm3 The thickness of the gold layer =…

Q: grams

A:

Q: Question 17 3 Points Calculate the energy cost of an electroplating process running at 0.71 V and…

A: Given - - > P = 0.71 V I = 41.4 A t = 3229 s

Q: A “dead” 12-Volt lead/acid storage battery has 9.40 g of PbSO4 (molar mass = 303.3 g), deposited on…

A: Given: mass of PbSO4 = 9.40 g Current (I) = 0.220 Ampere Voltage (V) = 13.0 V Molar mass of PbSO4 =…

Q: Calculate the reserve capacity at 80°F of an automobile battery that was discharged at 87°F for 102…

A: Reserve Capacity is the battery's capacity to keep a vehicle running if the charging mechanism…

Q: ELECTROCHEMISTRY: Copper was electroplated from a CuzsoA solution onto an electrode with an active…

A:

Q: 15. How many minutes would a current of 10.0 amps need to run through a solution containing Cut2 to…

A:

Q: A “dead” 12-Volt lead/acid storage battery has 4.30 g of PbSO4 (molar mass = 303.3 g), deposited on…

A:

Q: correct

A: The non Polarizable electrode is an electrode whose potential is not affected by the current passing…

Q: ELECTROCHEMISTRY: Copper was electroplated from a CuzSO4 solution onto an electrode with an active…

A: The electroplating thickness formula = gm Deposited =( it/96500) × (FM/n)   i=current in amp t=time…

Q: Part A The surface area of an object to be gold plated is 49.9 cm? and the density of gold is 19.3 g…

A: Given,  Surface area of gold, A = 49.9 cm2  Density of gold = 19.3 g.cm-3  Current(I) = 3.35 A…

Q: A flashlight uses batteries that add up to 4.5 V and has a power output of 0.48 W. (a) How much…

A: The solution is as :

Q: ELECTROCHEMISTRY: Copper was electroplated from a Cu2SO4 solution onto an electrode with an active…

A: Copper was electroplated from a Cu2SO4 solution onto an electrode with an active surface area of 6.8…

Q: If 15.00 A of current is applied, how long would it take to produce 25.0 g of Cr(s)? hr

A: Given: Electrolysis of molten chromium bromide Current=15.00 A Mass of Cr=25.0 g To Find: Time…

Q: Chapter 20 Multiple Choice Question 59 Part A What mass of aluminum can be plated onto an object in…

A: According to Faraday's first law of electrolysis the mass of metal deposited is calculated as…

Q: QUESTION 2 ELECTROCHEMISTRY: Calculate the required voltage (V) if an unknown metal (M) was…

A: Answer: Since, given current efficiency is 88%, therefore actual current passed is…

Q: 4.) How long would it take (in min) to plate 29.6 g of nickel from a 1.0 M Ni2* solution using a 4.7…

A:

Q: You were in the laboratory, and your instructor asked you to measure the length of 20 stained plant…

A: Answer

Q: If 15.0 A of current is applied, how long would it take to produce 48 g of Cr(s)?   ___ hr

A:

Q: An object with a surface area of 85.5 cm² is to be plated with nickel. A current of 7.95 A is…

A: Faraday's Law of electrolysis :  1.First Law : During electrolysis , If Q coulomb current is passed…

Q: What happens during the discharge of a lead-acid battery? A. The negative plate forms lead sponge.…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 1.b- A battery being charged at the finishing rate gives positive and negative electrode cadmium…

A: Cadmium reading taken on charge when the battery is at the end of charge can be vVery helpful in…

Q: at the cathode during discharge?

A:

Q: A “dead” 12-Volt lead/acid storage battery has 5.20 g of PbSO4 (molar mass = 303.3 g), deposited on…

A: GIVEN:

Q: A 1.5 volt D-cell battery can provide a total energy equal to 40000 J. If a current of I = 1.10 A…

A:

Q: Copper was electroplated from a Cu2SO4 solution onto an electrode with an active surface area of…

A: Surface area = 3.25 cm2 Current = 4.06A Time = 0.9497 hr

Q: Calculate the time needed to plate out 175 g of nickel from a Ni2+ solution when a current of 10.0 A…

A: Plating out nickel means reduction of Ni+2. Reduction reaction of Ni+2 can be shown as: Ni+2 +2e-…

Q: object with a surface area of 24.1 cm224.1 cm2 is to be plated with nickel. A current of 7.93 A7.93…

A: The total volume covered by Nickel=surface area×thickness of Nickel layer=24.1 cm2×9.71×10-3cm0.234…

Q: Formative Assessment 4.5 Instruction: Clearly show all the necessary solutions. 1. Using a current…

A: Given that for a plate onto a sculpture amount of copper = 1.50 gm current flow = i = 4.75 A the…

Q: 3. How long will it take to electrodeposit 1.05 g Cr from 0.504 M Cr2O72- solution if 3.10 A current…

A: SOLUTION: Step 1: The time required to electro deposit 1.05 g of Cr is calculated as follows:

Q: The time needed to plate out 1.00 g Ni(Ni2+) using a 15-amp current is about   3.7 minutes   7.3…

A: Mass of Ni(Ni^2+)=1.00g Current=15amp Time=?

Q: Copper was electroplated from a Cu2SO4 solution onto an electrode with an active surface area of…

A: Faraday first law of electrochemistry states that the mass of the metal deposited on the electrode…

Q: A “dead” 12-Volt lead/acid storage battery has 13.00 g of PbSO4 (molar mass = 303.3 g), deposited on…

A: According to Faraday’s first law of electrolysis,

Q: The time needed to plate out 1.75 g Ni(Ni2+) using a 15-amp current is about   380 minutes   190…

A: The Faraday’s Laws of electrolysis gives the information about the quantitative aspects taken place…

Q: ELECTROCHEMISTRY: Copper was electroplated from a Cu2SO4 solution onto an electrode with an active…

A: Given: Area:  7.3 cm2     I  = 4.54 A          t  = 0.6978 h = 2512.08 s     d = 8.96 g/cm3      MW…