Question

27 g of Al (Atomic mass = 27) will combine with _______ of O₂ to form aluminium oxide.
(A) 24 g
(B) 8 g
(C) 40 g
(D) 10 g

Answer 1

Answer:

A) 24 g is the correct ans

hope it helps

mark me as brilliant

plz follow me

thanks

Answer 2

Answer:

correct answer is option A: 24g

Explanation:

The balanced equation for the given reaction is:

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

Atomic mass of Al= 27 u

Atomic mass of O2= 32g

4 moles of Al reacts with 3 moles of oxygen to give 2 moles of Aluminum oxide

4x 27 g of Al reacts with 3x32 g of O2

108 g of Al ----> 96 of O2

27 g of Al ---->

= 27x 96/108

=24g