Answer:
0.903 A
Explanation:
We have given mass of Sn = 1 gram
Time t=30 minutes=30×60=1800 sec
According to Faraday law m=zit
Where z is electron chemical equivalent
z is calculated by 
where n is number of element and F is Faraday constant
So 
So 
i =0.903 A
Once we run out of fuel/petroleum/oil we can use hybrid automobiles using solar power or some other type of energy likes these new hybrid cars that can run with power like a battery on a controller and recharge them.
When you add or change the subscript, you are changng the number of atoms in the substance.
Yes it is possible
Explanation:
Galena and gold can become encrusted together. They can form together in the same geologic setting.
- Gold usually occurs freely in nature uncombined with other atoms.
- Galena is the largest ore of lead.
- Both minerals can become twinned under appropriate geologic conditions.
- They are usually seen in pegmatitic intrusions in a rock body as product of late stage melt crystallization.
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