Question

Please help!
What mass in grams of Al2O2 (s) will be produced?
(Al=26.98u , O=16.00u)

Answer 1

=26.98 x 2 + 16 x 2

=53.96+32
=85.96 gm

Answer 2

gram is the unit of Gram formula mass
whereas
a.m.u. is the unit of formula or molecular mass

Answer 3

See I work it out how you did and i got the same answer! But when i looked at the answer in the back of the book it was 101.96g

Answer 4

your question instead of Al2O2 it should be Al2O3
so ,
= 26.98 x 2 + 16 x 3
= 53.96 + 48
= 101.96 g
now it is match with your book answer