Answer:
Standard cell potential is 0.56V
Explanation:
Standard reduction potential (
) are given below-


As
is greater than
therefore Fe will be oxidized to
and
will be reduced to Cu
Oxidation: 
Reduction: 
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Overall: 
Standard cell potential, 
Since 1000 mg=1g
500mg=?
500/1000*1g=0.5g
Since we know that 500mg is 0.5g then divide 30g by 0.5g
30/0.5=60
Therefore the patients needs to take 60 tablets a day.
Answer: Iridium
Explanation:
The atomic number of Iridium is 77.
wavelength i think should be correct