Answer:
The batteries make it possible to store the electricity generated when the sun and wind peak so it can be available to the grid when electricity demand is at its peak.
Explanation:
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i think the answer is D 10.0
Answer : The cell emf for this cell is 0.077 V
Solution :
The balanced cell reaction will be,
Oxidation half reaction (anode): 
Reduction half reaction (cathode): 
In this case, the cathode and anode both are same. So,
is equal to zero.
Now we have to calculate the cell emf.
Using Nernest equation :
![E_{cell}=E^o_{cell}-\frac{0.0592}{n}\log \frac{[Zn^{2+}{diluted}}{[Zn^{2+}{concentrated}]}](https://tex.z-dn.net/?f=E_%7Bcell%7D%3DE%5Eo_%7Bcell%7D-%5Cfrac%7B0.0592%7D%7Bn%7D%5Clog%20%5Cfrac%7B%5BZn%5E%7B2%2B%7D%7Bdiluted%7D%7D%7B%5BZn%5E%7B2%2B%7D%7Bconcentrated%7D%5D%7D)
where,
n = number of electrons in oxidation-reduction reaction = 2
= ?
= 0.0111 M
= 4.50 M
Now put all the given values in the above equation, we get:


Therefore, the cell emf for this cell is 0.077 V