Answer:
A. Increase in permafrost thickness
Explanation:
<u>Climate warming (like of 4°C) would increase the active layer thickness (ALT) of permafrost</u>, which can cause changes in the hydrological cycle, ecological processes, and carbon flux in cold regions.
I believe it’s A................
Answer:
S AgBr = 2.82 E-3 mol/L
Explanation:
- AgBr ↔ Ag+ + Br- .....(1)
∴ Ksp = [ Ag+ ] * [ Br- ] = 5.0 E-13
- Ag+ + 2NH3 ↔ [ Ag(NH3)2 ]+ ..........(2)
∴ Kf = 1.6 E7 = α[Ag(NH3)2]+ / ( αAg+ )*( αNH3 )²
∴ <em>C </em> NH3(sln) = 1.00 M
from (1) + (2):
- AgBr(s) + 2NH3(aq) ↔ Ag(NH3)2+(aq) + Br-(aq)
1 M 0 0
1 - 2x x x
∴ K = Ksp*Kf = ( 5.0 E-13 )*( 1.6 E7 ) = 8.0 E-6
⇒ K = ( [ Br- ] * [ Ag(NH3)2+] ) / [ NH3 ]² = 8.0 E-6
⇒ K = (( x )*( x )) / ( 1 - 2x ) = 8.0 E-6
⇒ x² = 8.0 E-6*( 1- 2x )
⇒ x² + 1.6 E-5x - 8.0 E-6 = 0
⇒ x = 2.82 E-3 M
⇒ [ Br- ] = [ AgBr ] = 2.82 E-3 M
The wavelength of the photon is 1026 Å
Rydberg unit of energy corresponds to the energy of the photon whose wave number is Rydberg constant.
The value for the rydberg constant is 10 973 731.6 m-1
The formula for the rydberg constant for hydrogen is
1 / λ = Rh (1 / n1^2 - 1 / n2^2)
where Rh is the Rydberg constant
For the transition of an electron in a hydrogen atom from n = 1 to n = 3
1 / λ = Rh (1 / 1^2 - 1 / 3^2)
1 / λ = Rh (0.888)
λ = 1.126 / Rh
λ = 1.126 / 10 973 731.6
= 1.026 * 10^-7
= 1026 Å
Hence, the wavelength of the photon is 1026 Å
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Answer
and
Explanation:
All the energy in oil, gas, and coal originally came from the sun, which is captured through photosynthesis. The same way that we burn wood to release energy that the trees capture from the sun, we burn fossil fuels to release the energy that ancient plants had captured from the sun.
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