Question

If 1.5 moles of oxygen combine
with aluminium to form
Aluminium oxide (A1203), the
mass of Aluminium in gram
used in the reaction is .....
(Atomic mass of Al = 27)​

Answer 1

Answer:

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Answer 2

2AI+1.5O2 = A12O3

Thus, 2 mol of Al combine with 1.5 mol of oxygen to form 1 mol of Al2O3.

2 mol of Al corresponds to 2×27=54 g.

Thus, the weight of Al used in the reaction is 54 g.

Hence, the correct option is B