Question

1. how many atoms of tin are found in 3.50 moles of tin?

Explanation:

Step1: Recall Avogadro's number

1 mole of any substance contains $6.022 \times 10^{23}$ particles (atoms, in this case).

Step2: Multiply moles by Avogadro's number

Calculate total atoms: $3.50 \times 6.022 \times 10^{23}$

Answer:

$2.11 \times 10^{24}$ atoms of tin