Question

unit 1, classwork #3 - mole conversions use dimensional analysis to solve the mole conversions below. show your work. moles and particles 1. calculate the number of atoms in one mole of iodine. (use avogadros number!) 2. calculate the number of atoms in one mole of scandium.

Explanation:

Step1: Molecules in 1 mole I₂

$1\ \text{mol I}_2 \times 6.022 \times 10^{23}\ \text{molecules/mol} = 6.022 \times 10^{23}\ \text{molecules}$

Step2: Atoms in I₂ molecules

$6.022 \times 10^{23}\ \text{molecules} \times 2 = 1.2044 \times 10^{24}\ \text{atoms}$

Step1: Atoms in 1 mole Sc

$1\ \text{mol Sc} \times 6.022 \times 10^{23}\ \text{atoms/mol} = 6.022 \times 10^{23}\ \text{atoms}$

Answer:

$1.2044 \times 10^{24}$ atoms