Question

Calculate the number of Li atoms in 5.9 mol of Li .

express your answer using two significant figures

Answer 1

To calculate the number of Li atoms in 5.9 mol of Li, you can use Avogadro's number, which is approximately \(6.022 \times 10^{23}\) atoms per mole.

First, let's calculate the number of Li atoms in 5.9 mol:

\(5.9 \, \text{mol} \times 6.022 \times 10^{23} \, \text{atoms/mol} = 3.5 \times 10^{24}\) atoms

Rounding to two significant figures, the number of Li atoms in 5.9 mol of Li is \(3.5 \times 10^{24}\) atoms.