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Sig Fig notes

# Sig Fig notes - 18.9e8 403 2(F 83.80(Kr 121.796 806 4...

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Significant Fioures - per Dr. Loza The number of significant figures is the minimum number of digits needed to write a given number in scientific notation without loss of accuracy: . The number 92,500 is ambiguous 9.25 x lOa 3 significant figures L250 x 104 4 significant figures 9.2500 x 104 5 significant figures o Zeros are significant when they occur in the middle of a number or at the end of the right hand side of a decimal point. 106 0.0106 0.106 0.1060 Roundinq. look at the digit beyond the last desired place. lf greater than 5, round up. 65.4 = 65 78.8 = 79 Siqnificant Fiqures In Addition and Subtraction 18.998 403 2 (F) mass of KrF2 is 121.80
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Unformatted text preview: 18.9e8 403 2 (F) 83.80 (Kr) 121.796 806 4 digits not significant are in itatics . lf the numbers being added or subtracted do not have the same number of significant figures, we are limited by the last uncertain one. Siqnificant Fiqures in Multiplication/Addition (4.317 9 x 1012X3.6 x 10-1e;= 1.554 444x106 1.6 x 10-6 (34.60)l(2.462 87) = 14.048 650 56 14.0s o Limited to the number of digits contained in the number with the fewest significant figures. Loqarithms and Antiloqarithms n = 10u means log n = a 3.39 x 102 (3 SF) tog 339 = 2.530 19 3 SF: 2.530 antilog (-3.42) - 10'3'42 = 3.801 89 x 10-a 2 SF: 3.g x 10-a...
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