AP®ChemistryCollege BoardExam QuestionsUnit 1: Atomic Structure & PropertiesElements & Mixtures

Elements & Mixtures (College Board AP® Chemistry)

Exam Questions

3 mins3 questions
11 mark

A compound contains a compound 39% sulfur, 58.6 % oxygen and the remainder is hydrogen. What is the empirical formula of the compound?

  • SOH

  • SO3H

  • SO3H2

  • S6O2H6

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21 mark

The chemical formula of the fertiliser ammonium nitrate is (NH4NO3). What is the mass of nitrogen in 23.15 g sample of ammonium nitrate?

  • 17.49g

  • 34.99g

  • 8.10 g

  • 4.05 g

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31 mark

Which masses of carbon and hydrogen respectively would be the same as the mass of carbon and hydrogen in a pure sample of butene, C4H8?

  • 48 g, 10 g

  • 60 g, 12 g

  • 84 g, 12 g

  • 72 g, 12 g

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