Question

find the number of oxygen science in 204 grams of AL2O3

Answer 1

1 mole of Al2O3 is equal to 102 gm

1 mole of O3 is equal to 48 gm

102 gm of Al2O3 is equal to 48 gm of O3

204 gm of Al2O3 is equal to (48*204/102) gm of O3

Hence, the number of Oxygen ion in Al2O3 is equal to 96 gm O3.