A 435.0 g sample of CaCO3 that is 95% pure gives 225L of CO2 when reacted with excess of hydrochloric acid. What is the density
2 answers:
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Answer :
(a) The energy of blue light (in eV) is 2.77 eV
(b) The wavelength of blue light is
Explanation:
The relation between the energy and frequency is:
where,
h = Plank's constant =
Given :
Frequency =
Conversion used :
So,
Also,
So,
The energy of blue light (in eV) is 2.77 eV
The relation between frequency and wavelength is shown below as:
Where,
c = the speed of light =
Frequency =
So, Wavelength is:
Conversion used :
The wavelength of blue light is