If I short out a D cell and draw a current of 7 A for 5 s, how many coulombs of charge move through the circuit?
43. If a 2.5 A current flows through a circuit for 35 minutes, how many coulombs of charge moved through the circuit? 44. For the scenario in the previous question, how many electrons moved through the circuit? 45. Write the half-reactions and cell reaction occurring during electrolysis of each molten salt below. (a) CaCl2 (b) LIH (c) AICI3 (d) CrBr3
If a current of 4.70x10^-5 A is drawn from a solar cell for six months, how many coulombs of charge are involved? Assume that there are an average of 30 days per month.
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ELECTRICAL EQUATIONS: Current (A) = Charge (C) / Time (5) | Energy (1) = Potential Difference (V) x Charge C Power (W) = Energy D / Time (s) Conversion Physical Constants: Factors: 1A=1C/s Charge of e- 1.60 x 10°C 1 -1 VC Faraday - 96,485 C/mol 1W= 1 J/s 1. How much energy is required to move 2.53 x 104 Coulombs of charge through a potential difference of 110.0 volts? 2. A steady 2.0 ampere current exists...
11. If a 2.5 A current flows through a circuit for 40 s, how many coulombs of charge moved through the circuit? 12. Consider two processes: sublimation of Iz(s) and melting of 12(s) at the same temperature (Note: the latter process can occur at the same temperature but somewhat higher pressure). (A) 12(s)I(9) and (B) 12(5) I2(1) Is AS positive or negative in these processes? In which of the processes will the magnitude of the entropy change be greater? -...
Q3. Consider an ideal solar cell with following parameters: Short circuit current - A and open circuit voltage 0.6V. current LOAD (a) Find the diode saturation current (lo) of the solar cell. (10 points) (b) Estimate the power delivered by the solar cell to a load of RL -0.1. Justify any approximation in your calculation (10 points) (e) After few years of field operation, the solar cell developed series resistance of R, ohms and shunt resistance of Rsh ohms. Draw...
A current of 1000. A flows for exactly 1 hour, through a cell in which the following reaction occurs at one of the electrodes. Mg2+ + 2e- → Mg a) Calculate the charge, in coulombs, which passes through the circuit in this time. b) Calculate the theoretical mass of Mg (magnesium metal) which is produced in this time.
A current of 0.50 amperes flowed through a cell for two hours in which CuSO_4 is the electrolyte. a. Write the anode reaction for the cell. b. How many Coulombs of electricity are generated? c. How many Faradays arc generated? d. How many moles of electrons arc generated? e. Calculate the change in mass of the cathode of this cell.
31. Find the current, I, in the short circuit. Hint: re-draw the circuit first, ignoring the I branch.(2.13 2 ohm 6 ohm 3 ohm 10 V 4 ohm2 oh 5 ohm
A galvanic cell consists of a manganese anode immersed in a MnSO4 solution and a copper cathode immersed in a CuSo4 solution. A salt bridge connects the two half-cells (a) Write a balanced equation for the cell reaction. (b) A current of 1.34 A is observed to flow for a period of 1.99 hours. How much charge passes through the circuit during this time? How many moles of electrons is this charge equivalent to? mol (c) Calculate the change in...
A-D
A. How many miles of Cu2+ is present in the solution?
B. How many miles of electrons are needed to plate all the
Cu2+?
C. Calculate the coulombs of charge, q required to plate all
Cu2+?
D. How many hours will it take to plate out all the
Cu2+?
B. Electrodeposition A solution of 200.0 mL of a o015 M cu r solution was electrolyzed using a current, i, of 0.200 amp? The half reaction is shown below: 2...