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In an experiment, 2.62 g of iron react completely with 1.50 g of sulfur. What is the empirical formula for the compound produced?Group of answer choicesFeSFe2SFe2S3FeS2

Question

In an experiment, 2.62 g of iron react completely with 1.50 g of sulfur. What is the empirical formula for the compound produced?Group of answer choicesFeSFe2SFe2S3FeS2

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Solution

To find the empirical formula, we first need to convert the mass of each element to moles.

  1. The molar mass of iron (Fe) is approximately 55.85 g/mol and the molar mass of sulfur (S) is approximately 32.06 g/mol.

  2. Convert the mass of iron to moles: 2.62 g Fe * (1 mol Fe / 55.85 g Fe) = 0.047 mol Fe

  3. Convert the mass of sulfur to moles: 1.50 g S * (1 mol S / 32.06 g S) = 0.047 mol S

  4. The ratio of moles of Fe to S is 1:1, so the empirical formula is FeS.

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