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How many moles H(2) obtained from 54 gm ...

How many moles `H_(2)` obtained from 54 gm Al. Give its reaction.

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`underset("2 mole = 54 gm")(2Al_((s))+2NaOH_((aq)))+H_(2)O_((l))to 2NaAlO_(2(aq))+ underset("3 mole")(3H_(2(g)))`
..3 moles `H_(2)` gas obtained from 54 gm Al.
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