Course Chapters

Calculator Fundamentals

Mathematics Review

• Numbers and their Properties
  
• Numbers in Science
  
• Ratios and Proportions
  
• Units, Dimensions and Conversions
  
• Percents
  
• Simple Statistics
  
• Logarithms
  

Basic Concepts

Advanced Concepts

Pre-test

Post-test

Redox Calculator

Kinetics Arrhenius Calculator

Thermodynamics Calculator

Nuclear Decay Calculator

Linear Least Squares Regression

Newton's Method Equation Solver

Compressibility Calculator

Units Conversion Calculator

Nomenclature Calculator

Texas Instruments Calculators

Casio Calculators

Sharp Calculators

Hewlett Packard Calculators

Balancing Equations

The trick with this one is to treat the phosphate ion (PO₄^-3) as an element, and not break it into two individual elements.If you do that, you get:

Fe: 1a + 0b -3c = 0d
Cl: 2a + 0b + 0c = 1d
Na: 0a + 3b + 0c = 1d
(PO₄): 0a + 1b - 2c = 0d

Note that you do not have a square matrix for Matrix A. Following the regular procedures, you should get a 4 x 3 matrix (four rows, three columns). You can make it square without changing the algorithm by adding a column of 1's at the end of the matrix.