Lesson: Empirical and Molecular Formulas

In this lesson, we will learn how to define and convert between the empirical, molecular, and structural formulas of a compound.

Sample Question Videos

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Worksheet: 8 Questions • 3 Videos

Q1:

A compound containing only tungsten and chlorine is reduced with hydrogen to produce hydrogen chloride gas and 0.2232 g of tungsten metal. Complete reaction of the hydrogen chloride in water requires 46.2 mL of a 0.1051 M sodium hydroxide solution. Determine the empirical formula of the unknown compound.

Q2:

What is the empirical formula of this compound?

What is the molecular formula of this compound?

Q3:

Caffeine has the chemical formula . What is its empirical formula?

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