The energy released when electron move from n=4 to n=3 is 0.66 eV
We know that in an atom energy of nth state is
eV
where n is the energy level
Therefore,

Thus,
= -0.85eV
= -1.51eV
Therefore, total mount of energy released in moving electron from n=4 to n=3 is given by -

= -0.85 - ( -1.51)
= 0.66eV
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Answer:
"
" is the right answer.
Explanation:
Given:
Partial pressure of
,
= 0.20 atm
Partial pressure of
,
= 0.15 atm
at 
As we know,
⇒ 
By putting the values, we get



Answer:
sorry don't know the answer but i really need the points sorry
Explanation:
Answer: one molecule of O2.
Explanation: sweet i just took a guess but I believe that if 3 o2 molecules - 2 h2 molecules I think that its just basic maths and it is C because 3-2 = 1 and its o2 remaining, sorry if I’m wrong.