ProblemSet233answers

Problem Set #03- Significant figures, Precision and Accuracy Group #: ___________ Last Names: _________________________________________________ 1.) Let’s say I count the number of people in this class and find there are 125 people in the room. This number (“125”) has how many significant figures? a.) One c.) three b.) Two d.) infinite 2.) How many significant figures in the measurement 0.0023 grams? a.) 2 b.) 3 c.) 4 d.) 5 e.) infinite 3.) How many significant figures in the measurement, 20.300 m? a.) 2 b.) 3 c.) 4 d .) 5 e.) infinite 4.) What is the value of this calculation: 8 – 2 x 4 = ? a.) 24 b.) 0 c.) 16 5.) What is the value of this calculation: 16 – 4 x 3 – 5 = ? a.) 31 b.) 9 c.) -1 d.) 1 6.) Find the answer to the correct number of significant figures: 120 + 446.2 a.) 566.2 b.) 566 c.) 567 d.) 560 e.) 570 f.) 500 g.) 600 7.) Find the answer to the correct number of significant figures: 120 / 446.2 a.) 0.2689 b.) 0.268 c.) 0.269 d.) 0.26 e.) 0.27 f.) 0.2 g.) 0.3 8.) Find the answer to the correct number of significant figures: 0.0123 - 0.6 a.) -0.5877 b.) -0.587 c.) -0.588 d.) -0.58 e.) -0.59 f.) -0.5 g.) -0.6 9.) What answer should be reported, to the correct number of significant figures, for the following calculation: (433.621 – 333.9) x 11.900 a.) 1.19 x 10 3 b.) 1.187 x 10 3 c.) 1.1867 x 10 3 d.) 1.1866799 x 10 3