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How many atoms of S in 4.30 grams of CS₂?

a) 1.5 x 10²³
b) 2.0 x 10²³
c) 3.0 x 10²³
d) 4.5 x 10²³

User Yasin
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1 Answer

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Final answer:

Using Avogadro's number and the molar mass of CS₂, it was determined that 4.30 grams of carbon disulfide contain approximately 6.81 × 10²² atoms of sulfur, which does not match any of the provided options.

Step-by-step explanation:

To determine how many atoms of sulfur (S) are in 4.30 grams of carbon disulfide (CS₂), we can use Avogadro's number and the molar mass of CS₂. The molar mass of CS₂ is approximately 76.14 g/mol (12.01 g/mol for carbon + 2 × 32.07 g/mol for sulfur). First, we find the number of moles of CS₂ in 4.30 grams:



Number of moles of CS₂ = 4.30 g ÷ 76.14 g/mol = 0.0565 mol



Since each molecule of CS₂ contains two atoms of sulfur, the total number of sulfur atoms in 0.0565 moles of CS₂ is:



Total S atoms = 0.0565 mol × 2 × 6.022 × 10²³ atoms/mol = 6.81 × 10²² atoms of S



This amount does not correspond with any of the given options (a, b, c, d). Therefore, we will not select any answer from the given options in this scenario.

User Arleigh Hix
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