Respuesta :
The moles of oxygen produced with 11 moles Al is 8. 25 moles. Thus, option A is correct.
The balanced chemical equation for the reaction is:
[tex]\rm 2\;Al_2O_3\;\rightarrow\;4\;Al\;+\;3\;O_2[/tex]
Computation for moles of Oxygen produced
From the balanced chemical equation, the stoichiometric coefficient gives the idea about the moles of compound reacted and produced.
From the given balanced chemical equation, 2 moles of aluminum oxide produces 3 moles of oxygen and 4 moles of Aluminum.
The available moles of aluminum are 11 moles, the moles of oxygen produced is given by:
[tex]\rm 4\;mol\;Al=3\;mol\;O_2\\\\11\;mol\;Al=\dfrac{3}{4}\;\times\;11\;mol\;O_2\\\\ 11\;mol\;Al=8. 25\;mol\;O_2[/tex]
The moles of oxygen produced with 11 moles Al is 8. 25 moles. Thus, option A is correct.
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