Answer:
1 mole of Al2O3 = 102 grams
1 mole of Al2 = 54 grams
102 grams of Al2O3 contains = 54 gram of Al2
10kg of Al2O3 contains = (54/102)*10000g Al2
= 5294.11 g Al2 or 5.29411 kg
Iron filings can be attracted by the magnet whereas salt can not. So the mixture can be separated by a magnet
Answer
Negative 5 and StartFraction 7 over 8 EndFractionfeet
