Answer to Question #97043 in Chemistry for Mykle

Question

1. A copper metal is (100.0±0.1) cm long, (9.8±0.1) cm wide, and (2.51±0.03) cm thick. Assuming the metal is rectangular, calculate its approximate volume and density if the mass of the metal is (253.0±0.2) g.
2. Consider the scenarios below. a. In an experiment, the volume of 0.10 M solution obtained in 5 successive measurements are 10.3 mL, 10.4 mL, 10.6 mL, 10.2 mL and 10.1 mL. If the least count on the burette is 0.1 mL, what is the relative error of the measurements made? b. A student took 10 measurements of the mass of a solid in a laboratory. The student calculated the average mass together with the precision and had (3.04 ± 0.06) g. What does it mean?

Answer 1

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