Question

27 gram of alumuiun reacts with
how many oxygen completely

Answer 1

The balanced equation for the given reaction is:

4 Al       +      3 O2    -------->       2 Al2O3

Atomic mass of Al = 27g

Atomic mass of O2 = 2 x 16 = 32g

Mole ratio of aluminium and oxygen can be given as:

Al    :  O2

4     :   3

1    :  3/4

Mass of O2 required = 3/4 x 32 =24g

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