Final answer:
To determine the number of atoms in 3.50 moles of CaCl2, multiply 3.50 moles by Avogadro's number (6.022 x 10^23 atoms/mol) and the number of atoms per formula unit (3). The result is roughly 6.322 x 10^24 atoms.
Step-by-step explanation:
To calculate how many atoms are in 3.50 moles of calcium chloride (CaCl2), you first need to understand that calcium chloride is often an ionic compound consisting of calcium ions (Ca2+) and chloride ions (Cl-). In one mole of CaCl2, there is one atom of calcium and two atoms of chloride, summing up to three atoms per formula unit.
Since Avogadro's number is 6.022 x 1023 representative particles per mole, we can use it to convert moles to atoms.
The total number of atoms in 3.50 moles of CaCl2 can be found by multiplying the number of moles by Avogadro's number and then by the number of atoms in each formula unit:
3.50 moles CaCl2 x (6.022 x 1023 atoms/mol) x 3 atoms/formula unit = 6.322 x 1024 atoms
Therefore, there are approximately 6.322 x 1024 atoms in 3.50 moles of CaCl2.