I dont understand??????????????
1 answer:
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Answer:
4.351968e+17 seconds
Explanation:
So I googled age of the universe and it says 13.8 billion years.
you'll have to do some conversions:
in one year, there are 365 days. in one day, there are 24 hours. in one hour, there are 3600 seconds.
so you have to add in the current age of the universe to that equation:
arranged so that the proper "units" will read as "x seconds" at the end of the equation.
then you do the math to find x:
13.8 billion x 365 x 24 x 3600 = 4.351968e+17 seconds.
which would be 435,196,800,000,000,000 seconds
Hope this helps :)
Explanation:
Wavelength in an emission spectrum,
The energy of an electron is given by :
Where
h is the Planck's constant
c is the speed of light
For 435 nm, the energy of the electron will be :
We know that
So,
So, E = 2.86 eV
The energy of the electron dropping from one energy level is 2.86 eV. We know that,
From the given energy levels :
So, the transition must be from E₅ to E₂. Hence, this is the required solution.