Recitation Worksheet

# Recitation Worksheet - Recitation Worksheet 1 1 Determine...

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1. Determine the number of significant figures in each of the following measured numbers. number # sf number # sf 28.00 % 0.3408 ng 605.08 L 52000 cd 2. Carry out the following mathematical operations of measured numbers. Express your answers with the correct number of significant figures. 648.1 + 4.808 = 0.030 + 0.077 + 0.8311 = 12.6 − 5.67 = 0.36 − 0.09 = 16.4 + 6 + 4.00 = (2.3x10 -3 ) (12.028) = = 9006 2.30x10 3 ( 29 ( 29 = 0 . 14 9911 . 0 09 . 2 = 11 . 0 88 . 0 3. Round off the following measured numbers to the indicated number of significant figures. number # sf number # sf number 3576.4 2 3 0.0030960 3 8002 2 0.505200 3 4. Are the numbers in the following statements exact or measured numbers? There are seven days in a week. ________________ 31 grams of sugar ________________ My mom bought 3 tomatoes at Wall Mart ________________ I bought 3 pounds of tomatoes at Wall Mart ________________ There are 12 months in a year . 5.

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## This note was uploaded on 10/23/2008 for the course CHEM 201 taught by Professor Harris during the Spring '07 term at Bucknell.

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Recitation Worksheet - Recitation Worksheet 1 1 Determine...

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