105Stoichiometry

# 105Stoichiometry - elevated temperatures to yield 0.692 g...

This preview shows pages 1–10. Sign up to view the full content.

Lesson 5 Empirical and molecular formulae The empirical formula gives the relative number of atoms in a molecule Different substances can have the same empirical formula.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Lesson 5 Example 1 An oxide of antimony (Sb) is found to contain 24.73% of oxygen by weight. What is its empirical formula?
Lesson 5 Example 2 Fifty mg of a compound used as dental cement is broken down into its constituent elements and gives 16.58 mg of oxygen, 8.02 mg of phosphorus, and 25.4 mg of zinc. Determine the empirical formula of this compound.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Lesson 5 Example 3 A 0.578 g sample of pure tin (Sn) is treated with gaseous fluorine until the weight of the resulting compound is constant at a value of 0.944 g. What is the empirical formula of the compound formed during the reaction?
Lesson 5 Example 4 A sample of 1.0 g of a compound containing carbon and hydrogen reacts with oxygen at

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: elevated temperatures to yield 0.692 g of water and 3.381 g of carbon dioxide. What is the empirical formula of the compound? Lesson 5 Using gas densities to calculate molar masses of gases • At standard temperature and pressure = L g : V m ρ mol L 4 . 22 = = mol g mol L L g : mol L 4 . 22 M Lesson 5 Example 4 When 0.21 g of a compound containing only hydrogen and carbon is burned, 0.66 g of Lesson 5 Example 5 A 0.596 g sample of a gaseous compound Lesson 5 Suggested readings 3.1 Types of Chemical Compounds and Their Formulas Lesson 5 Summary • Substances; chemical formulae • Concept of a mole of a substance • Chemical equations • Stoichiometric calculations • Limiting reactants and percentage yields • Empirical and molecular formulae...
View Full Document

{[ snackBarMessage ]}

### Page1 / 10

105Stoichiometry - elevated temperatures to yield 0.692 g...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online