CH-1010 Lecture Notes - Lecture 1: Trailing Zero, Decimal Mark, International System Of Units

• School: Clemson University
• Department: Chemistry
• Course: CH-1010
• Professor: Thomas Hickman

Document Summary

If device has markings impose one or more digit beyond certain. A: the last digit is assumed to be +/- 1, unless noted. Precision and accuracy: accuracy : refers to agreement of data with true value a. How close to a bullseye an arrow is : precision : refers to agreement of data points with each other a. N : number has to be between one and ten n : positive or negative integer. A sense of conversions done in a continuous fashion. Km m mile l gt gal. 15km/l (1000 m/1 km) (1 mile/1609 m) (1 l/1. 06 m) (1l/1. 06 qt) (4 qt/1 gal) = 35. 18mile/gal. Density: density : mass per unit volume d = m/v, gases : g/l, solids : g/ml, sense of compactness i. Calculations addition/subtraction the only time you can lose or gain significant figures (sf) Multiplication and division - answer has the same number of sf as the original with the smallest number of sf.