Final answer:To find the number of atoms in Earth, divide its mass (5.98 × 10^24 kg) by the mass of an average atom in kilograms (40 u). With theatomicmass unit (u) converted to kilograms, the calculation reveals there are approximately 9.0 × 10^49 atoms in the Earth.Explanation:To calculate the number of atoms in the Earth, first we must convert the mass of Earth to the same units as the atomic mass. The mass of Earth is 5.98 × 1024 kg, and the average atomic mass of the atoms that make up Earth is 40 u (atomicmass units). One atomic mass unit isequivalentto 1.660539 × 10−26 kg. Therefore, to find the number of atoms, we perform the following calculation:Number of atoms = (Mass of Earth in kg) / (Average atomic mass in kg)First, convert the atomic mass to kilograms:40 u × 1.660539 × 10−26 kg/u = 6.642156 × 10−25 kgThen divide the mass of Earth by this number:5.98 × 1024 kg / 6.642156 × 10−25 kg = approximately 9.0 × 1049 atomsThe Earth consists of approximately 9.0 × 1049 atoms.Learn more about Number of Atoms in Earth here:brainly.com/question/131901#SPJ12...

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