Answer: 1.2044 x 10^23 atoms in 0.2 moles of iron.
Explanation: The number of atoms in a given amount of a substance can be calculated using Avogadro's number, which is approximately 6.022 x 10^23 atoms per mole. To find the number of atoms in 0.2 moles of iron, we can use the following steps:
1. Start with the given quantity of moles: 0.2 moles of iron.
2. Multiply the given quantity by Avogadro's number: 0.2 moles x (6.022 x 10^23 atoms/mole).
3. Calculate the product: (0.2 moles) x (6.022 x 10^23 atoms/mole) = 1.2044 x 10^23 atoms.
Therefore, there would be approximately 1.2044 x 10^23 atoms in 0.2 moles of iron.