Calculate the wavelength ?λ and the frequency ?f of the photons
that have an energy of ?photon=2.32×10−18 J.Ephoton=2.32×10−18 J.
Use ?=3.00×108 m/sc=3.00×108 m/s for the speed of light in a
vacuum.
?=λ=
mm
?=f=
HzHz
Calculate the wavelength and the frequency of the photons that
have an energy of ?photon=901 MeV.Ephoton=901 MeV.
?=λ=
mm
?=f=
HzHz
Calculate the wavelength and the frequency of the photons that
have an energy of ?photon=5.61 keV.Ephoton=5.61 keV.
?=λ=
mm
?=f=
HzHz
Calculate the wavelength...
The energy of light photons varies with wavelength. Calculate
the energy per mole of photons for each of the following colors of
visible light.
Red Light, λ = 697 nm Green Light, λ = 549 nm Blue Light, λ =
403 nm
answer in kJ/mol
1)Calculate the wavelength (in nm) of a photon whose energy is 2
eV. 2)Also calculate the wavelength (in nm) of a free electron
moving with a kinetic energy of 2 eV.
suppose that the microwave radiation has a wavelength
of 11.6 cm . How many photons are required to heat 245 ml of coffee
from 25.0 °C to 62°C? Assume that the coffee has the same density
0.997 g/mL and specific heat capacity of 4.184 J/ (g•K), as water
over this temperature range.
Suppose that the microwave radiation has a wavelength of 12 cm .
How many photons are required to heat 305 mL of coffee from 25.0 ∘C
to 62.0 ∘C? Assume that the coffee has the same density, 0.997 g/mL
, and specific heat capacity, 4.184 J/(g⋅K) , as water over this
temperature range.
Suppose that the microwave radiation has a wavelength of 10.8 cm
. How many photons are required to heat 295 mL of coffee from 25.0
∘C to 62.0 ∘C? Assume that the coffee has the same density, 0.997
g/mL , and specific heat capacity, 4.184 J/(g⋅K) , as water over
this temperature range. Express the number of photons
numerically.
Suppose that the microwave radiation has a wavelength of 12.4 cm
. How many photons are required to heat 205 mL of coffee from 25.0
∘C to 62.0 ∘C? Assume that the coffee has the same density, 0.997
g/mL , and specific heat capacity, 4.184 J/(g⋅K) , as water over
this temperature range.
Suppose that the microwave radiation has a wavelength of 12.4 cm
. How many photons are required to heat 285 mL of coffee from 25.0
∘C to 62.0 ∘C? Assume that the coffee has the same density, 0.997
g/mL , and specific heat capacity, 4.184 J/(g⋅K) , as water over
this temperature range.
Express the number of photons numerically.