I spent it all of the 19 questions thatbi can post on answers so i can only post this question please help me answer these

Post by **answerhappygod** » Sun Jul 10, 2022 4:16 pm

I spent it all of the 19 questions thatbi can post on answers so i can only post this question please help me answer these questions?

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pfu esti em ou mosting Electrochemistry can be used to measure electrical current in a silver coulometer, in which a silv containing Ag* ions. The cathode is weighed before and after passage of current. A silver cathode initially has a mass of 5.582 g, and its mass increases to 12.48 g after current has flowed for 10.7 min. Compute the quantity of charge in coulombs and the current in amperes. Charge eTextbook and Media A C
Question 18 of 25 Here are two standard reduction potentials: Part 1 eTextbook and Media Save for Later Brg +2e-3Br Br₂(0)+2e-2Br Part 2 U-105 Use water autoprotolysis reaction and Kvalue, if needed. If these data are sufficient to allow calculation of Keq for dissociation of Bry at 298 K, do the calculation. U 1.065 -/4 E Attempts: 0 of 3 used Submit Answer ***
i P Current Attempt in Progress A portable radio that draws 150 milliamperes of current is powered by Ni-Cd rechargeable batteries. Compute the mass of Cd consumed when a disk is played whose length is 54 minutes. The Faraday constant is 96485 C/mol. 2NIO(OH)(s) + Cd(s) + 2H₂O(l) 2Ni(OH)₂(s) + Cd(OH)₂(s) eTextbook and Medial Hint Save for Later 8 Attempts: 0 of 3 used Submit Answer
View Policies Current Attempt in Progress In the electrolysis of aqueous ZnSO4, what mass of O₂ is generated by a current of 4.25 A flowing for 150.0 min? eTextbook and Media Save for Later g Attempts: 0 of 3 used Submit Answer
Current Attempt in Progress Canada produces about 1.5 million tonnes of chlorine per year by the electrolysis of brine (NaCl(aq)). If the required electrolytic cells are operated at a potential difference of 4.5 V, calculate how many total kilowatt hours (kWh) of electrical power are required. 1 kWh -3.6 × 10 J. eTextbook and Media Save for Later ×10 kWh Attempts: 0 of 3 used Submit Answer
View Policies Current Attempt in Progress How long would it take to electroplate all the Pb2+ in 0.270 L of 0.225 M Pb(NO3)2 solution with a current of 2.60 A (specify 3 significant digits in the answer)? eTextbook and Media D Save for Later min ! Attempts: 0 of 3 used Submit Answer
Question 25 of 25 < View Policies Current Attempt in Progress Electrolytic reactions, like other chemical reactions, are not 100% efficient. In a copper purification apparatus depositing Cu from a CuSO4 solution, operation for 6.70 hours at a constant current of 4.19 A deposits 29.7 g of Cu metal. What is the efficiency? eTextbook and Media Hint Save for Later -/4 = 1 percent Attempts: 0 of 3 used Submit Answ