I think it might be A. energy...hope this helps!
There is no image , so you cannot answer , sorry
You are given a galvanic cell consists of a Ni²⁺/ Ni half-cell and a standard hydrogen electrode. Also, you are given that the half cell Ni²⁺/ Ni will act as an anode, and the standard cell potential is 0.26V. You are asked to find the standard reduction potential for the half cell Ni²⁺/ Ni.
You will have a half - reaction for both nickel and hydrogen
The conversion of the symbol Ni²⁺/ Ni half-cell is
Ni²⁺ + 2e⁻ → Ni (s) E = 0.26V
and the conversion of the standard hydrogen electrode (SHE) is
2H⁺ + 2e⁻ → H₂ (g) E = 0V
Since H⁺ ions is a it difficult to set up during the process, nickel will be deposited at the cathode side instead of the anode. Therefore, The standard electron potential of the nickel will have -0.26V.
Continent drifts
Explanation:
The use of fossil evidences to support the correlation of land masses that are presently not together can suggests that continents do move and land masses can change position.
This was one of the earliest prove suggest by Alfred Wegener to back up his theory of continental drift.
- Since fossils are evidence of prehisotric life, a place originally together should have the same fossil contents.
- When they become separated, the fossil contents in their lithology should match.
learn more:
Continental drift brainly.com/question/5002949
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