Questions: Chapter 6 - Homework - Attempt 2 Exercise 6.21 MISSED THIS? Watch KCV: The Mole Concept, IWE: Converting between Moles and Number of Atoms: Read Section 6.3. You on the Review link to access the section in your eText. Complete the table: Element Moles Number of Atoms Ne 0.468 Ar - 3.76 × 10^24 Xe 1.60 - He - 1.16 × 10^20

Solution Steps

The relationship between moles and the number of atoms is given by Avogadro's number, which is \(6.022 \times 10^{23}\) atoms/mole. This means that one mole of any element contains \(6.022 \times 10^{23}\) atoms.

For Neon (Ne), we are given the moles and need to find the number of atoms. Using the formula: \[ \text{Number of atoms} = \text{moles} \times 6.022 \times 10^{23} \] Substituting the given value: \[ \text{Number of atoms for Ne} = 0.468 \times 6.022 \times 10^{23} = 2.818 \times 10^{23} \]

For Argon (Ar), we are given the number of atoms and need to find the moles. Using the formula: \[ \text{Moles} = \frac{\text{Number of atoms}}{6.022 \times 10^{23}} \] Substituting the given value: \[ \text{Moles for Ar} = \frac{3.76 \times 10^{24}}{6.022 \times 10^{23}} = 6.243 \]

For Xenon (Xe), we are given the moles and need to find the number of atoms. Using the formula: \[ \text{Number of atoms} = \text{moles} \times 6.022 \times 10^{23} \] Substituting the given value: \[ \text{Number of atoms for Xe} = 1.60 \times 6.022 \times 10^{23} = 9.635 \times 10^{23} \]

Final Answer