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chemistry chap. 4 equations and constants with units
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Gravity
Terms in this set (12)
c=λv
speed of light equation
c= 3e10 m/s
λ= wavelength in m
v= frequency in 1/s or Hz
E=hv
planks equation
E= energy per photon in Joules (J)(J=kg∙m²/s²)
h= Planck's constant (6.63e-34 Js)
v= frequency in 1/s
Eₙ= (-2.178e-18J) / n²
calculating energy of an electron of hydrogen
Eₙ= energy of an electron at a certain energy level (n=1, n=2, n=3, etc.)
n= the energy level
λ=h/mv
Debroglie wave equation
λ= wavelength in m
h= Planck's constant (6.63e-34Js)
m= mass in kg
v= velocity in m/s
Ephoton=Ef - EI
difference in energy between levels
"f" final orbitals
"I" initial orbitals
what is the speed of light?
3e8
what is planck's constant?
6.63e-34
what are the units used for frequency?
s^-1
1/s
Hz
what are the units for wavelength?
meters
what is the units for joules?
Js
kg∙m²/s²
what are the units for velocity?
m/s
what is the mass of an electron?
9.11e-31 kg
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