Final answer:
To find the number of aluminum atoms in the airplane, we need to calculate the mass of one aluminum atom and then divide the total mass of the airplane by the mass of one aluminum atom.
Step-by-step explanation:
First, we need to find the mass of one aluminium atom. From the given information, we know that there are 1.8069 × 1024 aluminium atoms in 81 g of aluminium. We can use this information to find the mass of one atom:
1 atom = 81 g ÷ 1.8069 × 1024 atoms = 4.478 × 10-23 g
Next, we can find the number of atoms in the airplane. We can do this by dividing the total mass of the airplane (5000 kg) by the mass of one aluminium atom:
Number of atoms = 5000 kg ÷ (4.478 × 10-23 g) = 1.115 × 1026 atoms