52. Solving a chemistry problem
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52. Solving a chemistry problem
1. The weight gain of a niobium sample during oxidation in air for a temperature of 1100 C is given in the table:
Time, hour 5 10 15 20 25
Sample weight gain, mg/cm2 45 80 100 118 130
Estimate the amount of niobium that can be oxidized in 100 hours at this temperature, assuming that the metal oxidizes to NbO2.
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