Question

1- moles of oxygen combine with Alto form Al O, the
weight of Al used in the reaction is (Al = 27)
a) 278
(b) 54 g
(c) 40.58
(d) 81 g​

Answer 1

Answer:

54 g

Explanation:

In formula of Aluminium oxide there is 2 atoms of Al and 3 atoms of O

No. of mole=1

Mass of Al =27×2 (Here there is 2 atom of

hydrogen)

=54

With respect to Al

No. of mole= Given weight

Molar mass

1=Weight

54

Weight of Al=54g