Ch.3 - Chemical ReactionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Calculate the number of moles of aluminum and silicon required to produce 143 g of chromium based on the following equations: Cr2O3 + 2 Al → 2 Cr + Al 2O3 2Cr2O3 + 3 Si → 4 Cr + 3 SiO 2 Moles of alumi

Problem
Calculate the number of moles of aluminum and silicon required to produce 143 g of chromium based on the following equations: 

Cr2O3 + 2 Al → 2 Cr + Al 2O3 
2Cr2O3 + 3 Si → 4 Cr + 3 SiO 2 

Moles of aluminum: 
Moles of silicon: