Sto c) 2.7 X 1024Tome2005 ETEA(1 The number of oxygen atoms in 0.5mole of Al2(CO3)3 is ..............a) 4.5 x 10 23b) 3.6 × 10 24d) 9.0 10 232. Calculate the volume occupied by 2.8 gof nitrogen gas at STP.g

Sto c) 2.7 X 1024Tome2005 ETEA(1 The number of oxygen atoms in 0.5mo

1.	Sto c) 2.7 X 1024Tome2005 ETEA(1 The number of oxygen atoms in 0.5mole of Al2(CO3)3 is ..............a) 4.5 x 10 23b) 3.6 × 10 24d) 9.0 10 232. Calculate the volume occupied by 2.8 gof nitrogen gas at STP.g
Answer» 2.7×10^24Explanation:there are 9 MOLES of Oxygen in one mole of Al2 (CO3)3 . So in 0.5 moles of the COMPOUND, we have 4.5 moles . and no. of oxygen atoms =4.5×6.022×10^23= 27.0990 ×10^23= 2.7099×10^24 .