32. Solution to Chemistry Problem

32. Solution to Chemistry Problem

3. The increase in the mass of an iron sample during oxidation in air to FeO at 780 C changes over time as follows:
Time, h 1 2 3 4 5
Sample weight gain, mg/cm2 8.0 11.3 13.9 16.0 17.9
Determine the law of growth of the protective film and draw a conclusion about the process mode.
Density of FeO = 5.8 g/cm3.

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