A solar cell can be constructed by depositing copper(II) sulfide from an aqueous

Question

A solar cell can be constructed by depositing copper(II) sulfide from an aqueous solution directly onto certain n-type silicon semiconductors. The precipitation of CuS may be represented by the following unbalanced equation: In one experiment, a 22.2 mm by 15.5 mm solar cell was prepared using 6.00 mL of 0.105 M thioacetamide and 2.00mL of 0.101 M copper(II) acetate (the source of the Cu^2+ ions). If the (actual) yield of CuS was 79.9%. what mass of CuS was product? What volume (in cm^3) was produced? If all of the CuS produced was deposited as an even layer on side of the solar cell, how thick was the layer of CuS? Assuming a formula unit of CuS is a perfect cube, how many formula units thick was the CuS in the solar cell?

Explanation / Answer

Mass of CUS= 0.161×159.16= 25.62×10`3g

Volume=25.6×10`3g÷5.6gcm`3= 4.57mm3

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