How many atoms are there in 0.125 moles of S8 molecules?
Correct answer: D. 6.02 x 10^23
- A. 1.6 x 10^21
- B. 9.0 x 10^22
- C. 3.6 x 10^23
- D. 6.02 x 10^23
Explanation
To determine the total number of atoms in 0.125 moles of S8 molecules, we use the formula:Number of Atoms = Moles × Avogadro's Number × Atoms per MoleculeHere, we have 0.125 moles of S8. Since each S8 molecule contains 8 sulfur atoms, we calculate:Number of Atoms = 0.125 moles × 6.02x1023 atoms/mole × 8 atoms/molecule = 6.02x1023 atoms.The other options are incorrect because they either miscalculate the number of atoms by not considering the number of sulfur atoms in the S8 molecule or misapply Avogadro's number in the calculations.
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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