Page 2: Stoichiometry and Chemical Calculations

This page covers stoichiometric calculations and more complex chemical problems.

Balancing Chemical Equations

The document provides practice in balancing równania reakcji chemicznych (chemical reaction equations).

Example: H₂ + N₂ → 2NH₃ (synthesis of ammonia)

Chemical Transformations

Students are asked to write equations for multi-step chemical transformations.

Example: H₂S → S → SO₂ → SO₃

Stoichiometric Calculations

The page includes problems on:

• Calculating atomic and mass ratios in compounds
• Determining percentage composition
• Solving mass-based stoichiometry problems

Highlight: These exercises reinforce the concept of prawo zachowania masy (law of conservation of mass) in chemical reactions.

Example: In the reaction of magnesium with sulfur, students calculate the mass of reactants given the mass of the product (magnesium sulfide).

Advanced Problems

The document concludes with more challenging problems involving:

• Thermal decomposition of calcium carbonate
• Determining the formula of a nitrogen oxide based on its molecular mass and composition

These exercises help students apply their understanding of rodzaje wiązań chemicznych i ich charakterystyka (types of chemical bonds and their characteristics) to solve complex chemical problems.