Respuesta :
The current must flow through the cell is 1.2×[tex]10^{3} }[/tex].
A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control volume is how it is calculated.
The surface area and thickness are 2.5 m² and 23X10⁻⁶ m respectively.
Volume =Surface area x thickness
Volume =2.5 m²x (23×10⁻⁶ m)
Volume =5.8×10^-5 m³
The density of Al is 3.97 g/cm³
Calculate the mass of aluminum as shown below:
Density= Mass/Volume
3.97 = Mass×1/5.8×10^-5 ×10^6
Mass = 2.3×10^2g
The anodization of Aluminum is as shown below:
4AI (s)+ 302 (g) → 2Al2/O3 (s)
Now, the oxidation number of Al in Al2O3 is +3 that in Al is zero. So, one Al3+ gains three electrons to form one atom of Al.
Al (s)→ Al (s)+3e
Charge = 2.3×10^2× 6 × 9.65 × 10^6 /(101.95 × 1 × 1)
Charge =1.3×10^6 C
Hence the charge passed in anodizing is 1.3×10^6 C
Current = charge × time
Current = (1.3×10^6 C ×1 min) /(18 min ×60 s) = 1.2×10^3 A
Hence, the current that flows is 1.2×10^3
learn more about current here:
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