Answer :
Final answer:
To calculate the number of atoms in a given amount of a substance, you can use Avogadro's number. Use the formula 'number of atoms = number of moles × Avogadro's number' to find the number of atoms in 6.53 moles of calcium. In the second part, use the formula 'number of moles = number of atoms / Avogadro's number' to find the number of moles in 1.64 × 10^24 atoms of fluorine.
Explanation:
In order to determine the number of atoms in a given amount of a substance, you can use Avogadro's number, which states that 1 mole of any substance contains 6.02×1023 atoms. So, to find the number of atoms in 6.53 mol of calcium, you can multiply the number of moles by Avogadro's number:
Number of atoms = 6.53 mol × 6.02×1023 atoms/mol
For the second part of the question, you can use the same principle to find the number of moles in 1.64 × 1024 atoms of fluorine:
Number of moles = 1.64 × 1024 atoms × 1 mol / 6.02×1023 atoms/mol
Learn more about Avogadro's number here:
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