Part A:
How many coulombs are required to plate a layer of chromium
metal 0.24 mm thick...
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Chemistry
Part A:
How many coulombs are required to plate a layer of chromiummetal 0.24 mm thick on an auto bumper with a total area of 0.29 m2from a solution containing CrO2−4? The density of chromium metal is7.20 g/cm3. Express your answer using two significant figures. Q =______ C
Part B:
What current flow is required for this electroplating if thebumper is to be plated in 16.8 s ? Express your answer using twosignificant figures.
Answer & Explanation
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3.6 Ratings (321 Votes)
A Thickness h 024 mm 024 x 103 m Total area A 029 m2 Volume A X h 029 m2 x 024 x 103 m 00696 x 103 m3 1 m3 106 cm3 00696 x 103 x 106 cm3 696 cm3 Density 720 gcm3 massvolume Mass of chromium metal Volume x density
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