A tank contains math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn5/mn/mat...

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A tank contains math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn5/mn/math moles of oxygen, math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn2/mn/math moles of nitrogen and \( 20 \mathrm{~g} \) of hydrogen at room temperature.
Find the mole fraction of hydrogen.
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