Homework Answers
q = ne
= (1.8x1020)(1.6x10-19)C
= 28.8 C - charge moved through the calculator.
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ch 2. If I .80× 1020 electrons move through a pocket calculator during a full day's...
When you press one of the buttons on a pocket calculator, the battery provides a current...
When you press one of the buttons on a pocket calculator, the battery provides a current of 300 Mu A for 10 ms. (a) How much charge flows during that time? (b) How many electrons flow in that time?
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21 3. To start a car engine, the car battery moves 3.75x10 electrons through the starter motor. How many coulombs of charge were moved?
43. If a 2.5 A current flows through a circuit for 35 minutes, how many coulombs...
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
2. [1 mark.] The current flowing through a device is i(t) = 80(1 + sin(100nt)) A....
2. [1 mark.] The current flowing through a device is i(t) = 80(1 + sin(100nt)) A. Calculate the total charge flow through the device over one period from t = 0 to t = 10 ms. Express your answer in Coulombs.
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answer all parts ELECTRICAL EQUATIONS: Current (A) = Charge (C) / Time (5) | Energy (1) = Potential Difference (V)...
answer all parts
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...
Question 45 2 pts As electrons move through the proteins that reside between Photosystem II and...
Question 45 2 pts As electrons move through the proteins that reside between Photosystem II and Photosystem I, they lose energy. What is that energy used for? The energy is used to harvest photons from sunlight on the leaves of the plants. The energy is used to break water to replenish lost electrons in an earlier step of the process. The energy is used to pump water from the stroma of the chloroplast, maintaining osmotic balance. The energy is used...
#2 1. How many moles of electrons are represented by a total charge of 1.0 C?...
#2
1. How many moles of electrons are represented by a total charge of 1.0 C? The charge on A) 6.2 x 10 mol B) 1.6 x 10-19 mol C) 3.5 x 105 mol D) 1.0 x 10 mol 2. The charge on an electron is 1.602 x 10"9 C. How many electrons flow when 55 pJ of an electron is 1.602 x 10-19 C. electrical energy passes through a voltage of 9 V? A) 3.4 x 10 B) 3.8...
Please help me learn how to work out this problem. I assigned valence electrons but i...
Please help me learn how to work out this problem. I assigned
valence electrons but i keep having too many.
Structure, Hybridization, Resonance, Aromaticity In which of these Lewis structures would the iodine be assigned a formal charge of +2? ST-2 (A) CH-i-ö CH厂1-0: (D) CH -に。 (C) CH,O--0
When you press one of the buttons on a pocket calculator, the battery provides a current of 300 Mu A for 10 ms. (a) How much charge flows during that time? (b) How many electrons flow in that time?
21 3. To start a car engine, the car battery moves 3.75x10 electrons through the starter motor. How many coulombs of charge were moved?
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
2. [1 mark.] The current flowing through a device is i(t) = 80(1 + sin(100nt)) A. Calculate the total charge flow through the device over one period from t = 0 to t = 10 ms. Express your answer in Coulombs.
answer all parts
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...
Question 45 2 pts As electrons move through the proteins that reside between Photosystem II and Photosystem I, they lose energy. What is that energy used for? The energy is used to harvest photons from sunlight on the leaves of the plants. The energy is used to break water to replenish lost electrons in an earlier step of the process. The energy is used to pump water from the stroma of the chloroplast, maintaining osmotic balance. The energy is used...
#2
1. How many moles of electrons are represented by a total charge of 1.0 C? The charge on A) 6.2 x 10 mol B) 1.6 x 10-19 mol C) 3.5 x 105 mol D) 1.0 x 10 mol 2. The charge on an electron is 1.602 x 10"9 C. How many electrons flow when 55 pJ of an electron is 1.602 x 10-19 C. electrical energy passes through a voltage of 9 V? A) 3.4 x 10 B) 3.8...
Please help me learn how to work out this problem. I assigned
valence electrons but i keep having too many.
Structure, Hybridization, Resonance, Aromaticity In which of these Lewis structures would the iodine be assigned a formal charge of +2? ST-2 (A) CH-i-ö CH厂1-0: (D) CH -に。 (C) CH,O--0
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