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.