How many atoms of sulfur are in 280 g of a 50% by mass H₂SO₄ solution? A)8.6 × 10²⁵ atoms B)8.6 × 10²³ atoms C)8.0 × 10²⁵ atoms D)8.0 × 10²³ atoms E)2.8 × 10²⁹ atoms

Question

Quizplus · Accepted Answer

First, we need to calculate the amount of sulfur in the solution using the given mass percentage of H₂SO₄. Mass of sulfur = (50/100) x 280 g = 140 g To convert grams to atoms, we need to use the molar mass of sulfur, which is 32.06 g/mol. Number of moles of sulfur = 140 g / 32.06 g/mol = 4.365 mol Finally, we can use Avogadro's number (6.022 × 10^23) to convert moles to atoms. Number of sulfur atoms = 4.365 mol x 6.022 × 10^23 atoms/mol = 2.626 × 10^24 atoms Therefore, the correct answer is B) 8.6 × 10^23 atoms.

How Many Atoms of Sulfur Are in 280 G of a 50