Question

calculate the number of moles in 2.4 x 10²⁴ atoms s. what goes in the green blank for the unit cancellation? 2.4 x 10²⁴ atoms s 1.0 mole s 6.02 x 10²³ atoms s 4.2 x 10⁻²⁴ atoms s 24 moles s

Explanation:

Step1: Recall Avogadro's number

Avogadro's number is \(6.02\times 10^{23}\) atoms per mole.

Step2: Set up unit - cancellation

To convert atoms to moles, we use the conversion factor \(\frac{1.0\space mole\space S}{6.02\times 10^{23}\space atoms\space S}\). The unit "atoms S" will cancel out.

Answer:

\(6.02\times 10^{23}\space atoms\space S\)