)nitrogen from a gaseous phase is to be diffused into pure iron at 675°c. if the surface concentration is maintained at 0.2 wt% n, what will be the concentration 2 mm from the surface after 25 h? the diffusion coefficient for nitrogen in iron at 675°c is 2.8 × 10–11 m2/
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The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams
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‘which reaction would most likely require the use of an inert electrode?
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)nitrogen from a gaseous phase is to be diffused into pure iron at 675°c. if the surface concentrati...
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