The rate of photosynthesis was measured by counting the amount of oxygen, a product of photosynthesis, generated by the plant. When the plant placed closer to the light source in a given time it generated more bubbles than when it was placed farther away from the light source.
At almost the opposite point on the Earth's surface, the "P" waves reappear. The shadow zone exists because the waves are refracted as they pass through the boundary between the mantle and the core and are diverted from their original paths.
Answer:
sugar and salt, as they can dissolve in water. Sugar and salt have a high solubility in water. So, sugar and salt can form a solution with water.
Explanation:
The cell notation is:
![Mg(s)|Mg^{+2}(aq)||Ag^{+}(aq)|Ag(s)](https://tex.z-dn.net/?f=Mg%28s%29%7CMg%5E%7B%2B2%7D%28aq%29%7C%7CAg%5E%7B%2B%7D%28aq%29%7CAg%28s%29)
here in cell notation the left side represent the anodic half cell where right side represents the cathodic half cell
in anodic half cell : oxidation takes place [loss of electrons]
in cathodic half cell: reduction takes place [gain of electrons]
1) this is a galvanic cell
2) the standard potential of cell will be obtained by subtracting the standard reduction potential of anode from cathode
![E^{0}_{Mg}=-2.38V](https://tex.z-dn.net/?f=E%5E%7B0%7D_%7BMg%7D%3D-2.38V)
![E^{0}_{Ag}=+0.80V](https://tex.z-dn.net/?f=E%5E%7B0%7D_%7BAg%7D%3D%2B0.80V)
Therefore
![E^{0}_{cell}=0.80-(-2.38)=+3.18V](https://tex.z-dn.net/?f=E%5E%7B0%7D_%7Bcell%7D%3D0.80-%28-2.38%29%3D%2B3.18V)
3) as the value of emf is positive the reaction will be spontaneous as the free energy change of reaction will be negative
Δ![G^{0}=-nFE^{0}](https://tex.z-dn.net/?f=G%5E%7B0%7D%3D-nFE%5E%7B0%7D)
As reaction is spontaneous and there will be conversion of chemical energy to electrical energy it is a galvanic cell.