Question

27gm Al (atomic mass=27) react with ..... 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 � 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 � 32 =24g

Answer 2

Answer:

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Explanation: