Q.
If 1 12 moles of oxygen combine with Al to form Al2O3 the weight of Al used in the reaction is (Al = 27)
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a
27 g
b
54 g
c
49.5 g
d
31 g
answer is B.
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Detailed Solution
2Al+ 32 O2 → Al2O3According to equation 32 mole of O2 combines with 2 moles Al.2 mole Al=54 g
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