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← ScienceWhich change decreases the partial pressure of non-dissolved hydrogen gas bubbling through molten steel?
A)Increase the bath's liquidus temperature
B)Circulate cooled, high-density inert gas✓
C)Increase hydrogen activity in furnace gases
D)Reduce overall atmospheric moisture content
💡 Explanation
Circulating cooled, high-density inert gas promotes convective mass transfer because the *concentration gradient* increases the evaporative flux caused by improved ventilation; therefore, partial pressure decreases rather than increases observed activity because equilibrium is temperature-sensitive.
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