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In this blog, we will summarize the latex code of most popular equations and formulas for Atomic Structure, Electrochemistry, Thermochemistry, Chemistry. The topics include Bohr Radius, De Broglie Wavelength, Linear Momentum, Planck Quantized Energy Equation, Radii of stable orbits in Bohr model, Energy and Principal Quantum Number, Rydberg Equation, Speed of Light, Cell Voltage, Electric Current, Reaction Quotient, Equilibrium Constant and Cell Voltage, Enthalpy Change,Entropy Change, Gibb Free Energy Change, Specific Heat Capacity to Heat Equation, etc.
 1. Chemical Equations
 Bohr Radius
 De Broglie Wavelength
 Linear Momentum
 Planck Quantized Energy Equation
 Radii of stable orbits in Bohr model
 Energy and Principal Quantum Number
 Rydberg Equation
 Speed of Light
 Cell Voltage
 Electric Current
 Reaction Quotient
 Equilibrium Constant and Cell Voltage
 Enthalpy Change
 Entropy Change
 Gibb Free Energy Change
 Specific Heat Capacity to Heat Equation
1. Chemical Equations

Bohr Radius
Chemistry,Atomic StructureEquation
Latex Code
a_0 = \frac{{\hbar ^2 }}{{m_e ke^2 }}
Explanation
Latex code for the Bohr Radius. A Bohr radius is the distance between the nucleus and the outermost shell of an atom, specifically the distance between the nucleus and electron in the ground state of the hydrogen atom.
 : Bohr Radius, the electron is moving with velocity v around the nucleus in an orbit of radius
 : Electron of mass m
 : the number of orbits. The Bohr radius is proportional to the square of the number of orbits as h^2.
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De Broglie Wavelength
Chemistry,Atomic StructureEquation
Latex Code
\lambda = \frac{h}{{m\upsilon }}
Explanation
Latex code for the De Broglie Wavelength.
 : Electron of mass m
 : Velocity v
 : The number of orbits h
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Linear Momentum
Chemistry,Atomic StructureEquation
Latex Code
p = m\upsilon
Explanation
Latex code for Linear Momentum.
 : Linear Momentum
 : Velocity v
 : Mass m
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Planck Quantized Energy Equation
Chemistry,Atomic StructureEquation
Latex Code
\Delta E = h\nu
Explanation
Latex code for Planck Quantized Energy Equation.
 : Quantized Energy
 : h
 : \nu
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Radii of stable orbits in Bohr model
Chemistry,Atomic StructureEquation
Latex Code
r = n^2 \frac{{\hbar ^2 }}{{m_e kZe^2 }} = n^2 \frac{{a_0 }}{Z}
Explanation
Latex code for Radii of stable orbits in Bohr model.
 : Radii of stable orbits r
 : Bohr Radius, the electron is moving with velocity v around the nucleus in an orbit of radius
 : Electron of mass m
 : the number of orbits. The Bohr radius is proportional to the square of the number of orbits as h^2.
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Energy and Principal Quantum Number
Chemistry,Atomic StructureEquation
Latex Code
E_n =  R_H \left( {\frac{1}{{n^2 }}} \right) = \frac{{  2.178 \times 10^{  18} }}{{n^2 }}
Explanation
Latex code for Energy and Principal Quantum Number.
 : Energy E_n
 : R_h
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Rydberg Equation
Chemistry,Atomic StructureEquation
Latex Code
\Delta E = R_H \left( {\frac{1}{{n_i ^2 }}  \frac{1}{{n_f ^2 }}} \right)
Explanation
Latex code for Rydberg Equation. Rydberg suggested that all atomic spectra formed families with this pattern (he was unaware of Balmer's work). It turns out that there are families of spectra following Rydberg pattern, notably in the alkali metals, sodium, potassium, etc., but not with the precision the hydrogen atom lines fit the Balmer formula, and low values of n2 predicted wavelengths that deviate considerably. The results given by Balmer and Rydberg for the spectrum in the visible region of the electromagnetic radiation start with n2=3, and n1=2.
 : Energy E_n
 : RH is the Rydberg constant and is equal to 109,737 cm 1 (2.18 Ã? 10 â?? 18J)
 : n1 and n2 are integers (whole numbers) with n2>n1
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Speed of Light
Chemistry,Atomic StructureEquation
Latex Code
c = \lambda \nu
Explanation
Latex code for Speed of Light to Wavelength and Frequency Relationship.
 : Speed of Light
 : Wavelength
 : Frequency
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Cell Voltage
Chemistry,ElectrochemistryEquation
Latex Code
E_{cell} = E^\circ _{cell}  \frac{{RT}}{{n\Im }}\ln Q = E^\circ _{cell}  \frac{{0.0592}}{n}\log Q
Explanation
Latex code for Cell Voltage.
 : Energy of Cell
 : Wavelength
 : Frequency
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Electric Current
Chemistry,ElectrochemistryEquation
Latex Code
I = \frac{q}{t}
Explanation
Latex code for Electric Current.
 : Electric Current
 : Wavelength
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Reaction Quotient
Chemistry,ElectrochemistryEquation
Latex Code
\begin{array}{*{20}c} {Q = \frac{{\left[ C \right]^c \left[ D \right]^d }}{{\left[ A \right]^a \left[ B \right]^b }}} \\ {\begin{array}{*{20}c} {aA + bB \rightleftharpoons cC + dD} \\ \end{array}} \\ \end{array}
Explanation
Latex code for Reaction Quotient. The reaction quotient (Q) measures the relative amounts of products and reactants present during a reaction at a particular point in time. The reaction quotient aids in figuring out which direction a reaction is likely to proceed, given either the pressures or the concentrations of the reactants and the products. The Q value can be compared to the Equilibrium Constant, K , to determine the direction of the reaction that is taking place. Q equation is written by multiplying the activities (which are approximated by concentrations) for the species of the products and dividing by the activities of the reactants. If any component in the reaction has a coefficient, indicated above with lower case letters, the concentration is raised to the power of the coefficient. Q for the above equation is therefore as above.
 : Reaction Quotient
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Equilibrium Constant and Cell Voltage
Chemistry,ElectrochemistryEquation
Latex Code
\log K = \frac{{nE^\circ }}{{0.0592}}
Explanation
Latex code for Equilibrium Constant and Cell Voltage.
 : Equilibrium Constant
 : Cell Voltage
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Enthalpy Change
Chemistry,ThermochemistryEquation
Latex Code
\Delta H^\circ = \sum {H^\circ _f {\rm{products}}}  \sum {H^\circ _f {\rm{reactants}}}
Explanation
Latex code for Enthalpy Change.
 : Enthalpy Change
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Entropy Change
Chemistry,ThermochemistryEquation
Latex Code
\Delta S^\circ = \sum {S^\circ {\rm{products}}}  \sum {S^\circ {\rm{reactants}}}
Explanation
Latex code for Entropy Change.
 : Entropy Change
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Gibb Free Energy Change
Chemistry,ThermochemistryEquation
Latex Code
\Delta G^\circ = \sum {G^\circ _f {\rm{products}}}  \sum {G^\circ _f {\rm{reactants}}} \\ \Delta G^\circ = \Delta H^\circ  T\Delta S^\circ \\ \Delta G^\circ =  n\Im E^\circ
Explanation
Latex code for Gibb Free Energy Change. Gibb's Free Energy Change in Terms of Enthalpy, Absolute Temperature, and Entropy. Also, Gibb's Free Energy Change can be expressed in Terms of Gas Constant, Absolute Temperature, and Equilibrium Constant. Additionally, Gibb's Free Energy Change can be expressed in Terms of Number of Moles, Faraday, and Standard Reduction Potential.
 : Gibb Free Energy Change
 : Enthalpy chage
 : Absolute Temperature
 : Entropy Change
 : Gas Constant
 : Gas Constant
 : Equilibrium Constant
 : Number of Moles
 : Faraday
 : Standard Reduction Potential
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Specific Heat Capacity to Heat Equation
Chemistry,ThermochemistryEquation
Latex Code
q = mc\Delta T
Explanation
Latex code for Specific Heat Capacity to Heat Equation.
 : Heat Capacity
 : Mass
 : Absolute Temperature
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