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The Nernst equation is E = ((-2.3RT)/zF)*(log10 [Ci/Co])
E = equilibrium potential (mV)
z = charge on the ion
(2.3RT)/F = constant (60mV at 37C)
Ci = intracellular concentration
Co = extracellular concentration
The Nernst equation is important because it shows what the equilibrium potential would be for one ion.
E.g. The resting membrane potential is normally ~70mV. So during an action potential Na channels open their gates briefly and Na rush inside the cell. Na is ionized and carries a positive charge. So when Na rushes into the cell it makes the inside of the cell more positive. If you were to break off the gate and allow Na to move freely back and forth, the Nernst equation shows us that the equilibrium point for Na is ~+65mV.
•deltaG - DG0 = R T ln Q
• deltaG = nFE
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•E = E0+ (RT / nF) ln Q
What else can I help you with?
The voltage in a lightbulb is given by the equation V IR. In this equation V is the voltage I is the current and R is the resistance. What is the current in a lightbulb with a voltage of 10.0 V and a?
To find the current in a lightbulb using the equation ( V = IR ), you can rearrange it to ( I = \frac{V}{R} ). If the voltage ( V ) is 10.0 V, you would need the resistance ( R ) value to calculate the current ( I ). Once you have the resistance, simply divide 10.0 V by that resistance to find the current in amps.
How do you calculate the varistor?
To calculate the varistor voltage ((V_{m})), you need to determine the clamping voltage at a specific test current, typically using the manufacturer's datasheet. You can find the varistor's resistance at a given voltage by using Ohm's law ((R = V/I)) at that voltage. Additionally, the nonlinear relationship between voltage and current in a varistor can be described by the equation (I = k \cdot V^{\alpha}), where (k) and (\alpha) are constants specific to the varistor. For practical applications, ensure you account for the maximum and minimum operating voltages to avoid damage.
How is the oxidation potential voltage determined?
Oxidation potential voltage is determined through electrochemical measurements, typically using a reference electrode and a working electrode in an electrochemical cell. The potential difference between these electrodes is measured as a redox reaction occurs, allowing the calculation of the oxidation potential based on the Nernst equation. This value reflects the tendency of a substance to lose electrons, with higher voltages indicating a greater likelihood of oxidation. Experimental conditions, such as concentration and temperature, can also influence the measured potential.
A voltage wave has the equation e170sin and alpha. Calculate the instantaneous values of voltage for the following angles 30 degrees 60 deg?
To calculate the instantaneous voltage values for the given angles using the equation ( e(t) = 170 \sin(\alpha) ), where ( \alpha ) is in degrees, we substitute the angles into the equation: For ( \alpha = 30^\circ ): ( e(30) = 170 \sin(30^\circ) = 170 \times 0.5 = 85 , \text{V} ). For ( \alpha = 60^\circ ): ( e(60) = 170 \sin(60^\circ) = 170 \times \frac{\sqrt{3}}{2} \approx 147.2 , \text{V} ). Thus, the instantaneous voltages are approximately 85 V at 30 degrees and 147.2 V at 60 degrees.
What is the equation to calculate power when circuit current and resistance are known what is the equation?
The power ( P ) in an electrical circuit can be calculated using Ohm's Law, which relates voltage ( V ), current ( I ), and resistance ( R ). The equation is given by ( P = I^2 R ), where ( P ) is the power in watts, ( I ) is the current in amperes, and ( R ) is the resistance in ohms. This formula shows that power is directly proportional to the square of the current multiplied by the resistance.
What is the voltage of an electrolytic cell of nickel and copper?
-0.59 V
How nearnst equation is useful for calculation of electrode potential?
The Nernst equation is essential for calculating the electrode potential of an electrochemical cell under non-standard conditions. It relates the cell potential to the standard electrode potential, temperature, and the concentrations of the reactants and products involved in the electrochemical reaction. By using the Nernst equation, one can determine how changes in concentration affect the voltage, thereby predicting the behavior of the electrochemical system under varying conditions. This is crucial for applications in batteries, fuel cells, and corrosion studies.
The voltage in a lightbulb is given by the equation V IR. In this equation V is the voltage I is the current and R is the resistance. What is the current in a lightbulb with a voltage of 10.0 V and a?
To find the current in a lightbulb using the equation ( V = IR ), you can rearrange it to ( I = \frac{V}{R} ). If the voltage ( V ) is 10.0 V, you would need the resistance ( R ) value to calculate the current ( I ). Once you have the resistance, simply divide 10.0 V by that resistance to find the current in amps.
How do you calculate the varistor?
To calculate the varistor voltage ((V_{m})), you need to determine the clamping voltage at a specific test current, typically using the manufacturer's datasheet. You can find the varistor's resistance at a given voltage by using Ohm's law ((R = V/I)) at that voltage. Additionally, the nonlinear relationship between voltage and current in a varistor can be described by the equation (I = k \cdot V^{\alpha}), where (k) and (\alpha) are constants specific to the varistor. For practical applications, ensure you account for the maximum and minimum operating voltages to avoid damage.
How you calculate the polarity of voltage source across the resistor when two voltage sources are connected?
A: by using thevenin theorem
What is the voltage of a galvanic cell made with ah ni?
The voltage of a galvanic cell made with nickel (Ni) typically ranges from about 0.5 to 0.7 volts, depending on the specific half-reactions and the concentrations of the solutions involved. In a common configuration, nickel can be paired with a more reactive metal like zinc or a non-metal like copper, which influences the overall cell potential. The exact voltage can be calculated using the Nernst equation based on the standard electrode potentials of the involved half-reactions.
How do you calculate displacement of an object using the work-energy equation?
To calculate displacement using the work-energy equation, first calculate the work done on the object using the force applied and the distance moved. Then, equate the work done to the change in kinetic energy of the object using the work-energy equation: Work = Change in kinetic energy = 0.5 * mass * (final velocity^2 - initial velocity^2). Finally, rearrange the equation to solve for displacement.
How do you find equilibrium constant using standard reduction potentials?
To find the equilibrium constant using standard reduction potentials, you can use the Nernst equation: Ecell = E°cell - (RT/nF)ln(Q), where Ecell is the cell potential at equilibrium, E°cell is the standard cell potential, R is the gas constant, T is the temperature in Kelvin, n is the number of electrons transferred, F is Faraday's constant, and Q is the reaction quotient. By rearranging this equation and using the standard reduction potentials for the half-reactions involved, you can calculate the equilibrium constant.
How do you calculate distance using the distance equation?
i dont know that's why I'm asking
How do you graph a linear equation with a fraction in it?
You calculate the coordinates using a fraction!
How do you calculate low phase voltage of a three phase four wire system without using voltmeter?
The formula you are looking for is - phase voltage/1.73 = phase to neutral voltage.
How is the oxidation potential voltage determined?
Oxidation potential voltage is determined through electrochemical measurements, typically using a reference electrode and a working electrode in an electrochemical cell. The potential difference between these electrodes is measured as a redox reaction occurs, allowing the calculation of the oxidation potential based on the Nernst equation. This value reflects the tendency of a substance to lose electrons, with higher voltages indicating a greater likelihood of oxidation. Experimental conditions, such as concentration and temperature, can also influence the measured potential.
