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Hydrogen is produced by reacting methane (CH4(g),(natural gas)) with steam (H2O(g)), producing carbon dioxide (CO2(g)) and hydrogen (H2(g)). Nitrogen (N2(g)) is obtained by the fractional distillation of air (~78% N2(g)). Fractional distillation is a process by which the components in a chemical mixture are separated according to their different boiling points. Vapours from a boiling solution are passed along a cooled column. The temperature of the column gradually decreases along its length. Components with a higher boiling point condense on the column and return to the solution; components with a lower boiling point pass through the column, are condensed, and are collected in a suitable collecting vessel.

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Q: How do modern ammonia production facilities obtain pure hydrogen and pure nitrogen for the Haber process?
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