Ch.3 - Experimental ErrorWorksheetSee all chapters
All Chapters
Ch.1 - Chemical Measurements
Ch.2 - Tools of the Trade
Ch.3 - Experimental Error
Ch.4 + 5 - Statistics, Quality Assurance and Calibration Methods
Ch.6 - Chemical Equilibrium
Ch.7 - Activity and the Systematic Treatment of Equilibrium
Ch.8 - Monoprotic Acid-Base Equilibria
Ch.9 - Polyprotic Acid-Base Equilibria
Ch.10 - Acid-Base Titrations
Ch.11 - EDTA Titrations
Ch.12 - Advanced Topics in Equilibrium
Ch.13 - Fundamentals of Electrochemistry
Ch.14 - Electrodes and Potentiometry
Ch.15 - Redox Titrations
Ch.16 - Electroanalytical Techniques
Ch.17 - Fundamentals of Spectrophotometry
BONUS: Chemical Kinetics

Addition and subtraction of values written in scientific notation. 

Addition and Subtraction

Example #1: When you add or subtract values in scientific notation they must have the same exponents. 

If the exponents are not the same then we transform the smaller value so that they do. 

Example #2: Using the method discussed above, determine the answer to the following question. 

8.17 x 108 + 1.25 x 109

Remember when adding or subtracting values that the final answer must have the least number of decimal places. 

Example #3: Using the method discussed above, determine the answer to the following question. 

9.08 x 10-11 - 1.17 x 10-12 - 3.35 x 10-13