What is the average molecular weight (kg/kgmol) of a gas mixture with the following composition (compositions are in weight percent)? 30%  CH4 (Mw=16 kg/kgmol), 30%  H2  (Mw=2 kg/kgmol) and the remaining is N2  (Mw=28 kg/kgmol) answer with one decimal place.

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