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Empirical and Molecular Formula Practice Solutions, Exercises of Chemistry

Wesleyan UniversityChemistry

Worksheet on empirical and molecular formula. 7 questions solved in details

Typology: Exercises

2020/2021

Uploaded on 04/20/2021

alfred67
alfred67 🇺🇸

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Empirical and Molecular Formula Practice Solutions
1. A compound is found to contain 63.52 % iron and 36.48% sulfur. Find its empirical formula.
2. A compound is found to contain 26.56% potassium, 35.41% chromium, and the remainder oxygen.
Find its empirical formula.
3. A 60.00 g sample of tetraethyllead, a gasoline additive, is found to contain 38.43 g lead, 17.83 g
carbon, and 3.74 g hydrogen. Find its empirical formula.
pf3

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  1. A compound is found to contain 63.52 % iron and 36.48% sulfur. Find its empirical formula.
  2. A compound is found to contain 26.56% potassium, 35.41% chromium, and the remainder oxygen. Find its empirical formula.
  3. A 60.00 g sample of tetraethyllead, a gasoline additive, is found to contain 38.43 g lead, 17.83 g carbon, and 3.74 g hydrogen. Find its empirical formula.
  1. A 170.00 g sample of an unidentified compound contains 29.84 g sodium, 67.49 g chromium, and 72.67 g oxygen. Find the empirical formula.
  2. Determine the molecular formula of the compound with an empirical formula of CH and a formula mass of 78.110 u.
  3. Determine the molecular formula of a compound with an empirical formula of NH 2 and a formula mass of 32.06 u.