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Answer :
Answer:
there are approximately 2.89 x 10^24 atoms in 193 grams of calcium.
Explanation:
The molar mass of calcium is approximately 40.08 g/mol.
Calculate the number of moles in 193 grams of calcium by dividing the given mass by the molar mass:
Number of moles = 193 g / 40.08 g/mol ≈ 4.81 moles
To find the number of atoms, use Avogadro's number, which is approximately 6.022 x 10^23 atoms per mole:
Number of atoms = Number of moles × Avogadro's number
Number of atoms = 4.81 moles × 6.022 x 10^23 atoms/mole ≈ 2.89 x 10^24 atoms
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