Chemistry: Principles and Practice
3rd Edition
ISBN: 9780534420123
Author: Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher: Cengage Learning
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Chapter 1, Problem 1.44QE
A measurement’s true value is 17.3 g. For each set of measurements, characterize the set as accurate, precise, both, or neither.
- (a) 17.2, 17.2, 17.3, 17.3 g
- (b) 16.9, 17.3, 17.5, 17.9 g
- (c) 16.9, 17.2, 17.9, 18.8 g
- (d) 17.8, 17.8, 17.9, 18.0 g
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2. Perform the indicated operations and give answers in the indicated unit and with the proper number of significant
figures.
(a)
113.137g-2.047 g
50.0 mL-37.40 mL
(in g/mL)
(b) 25.50 g +462 mg + 0.0100 kg (in g)
(c) 0.900 mm * 0.8750 cm * 0.0031489 m (in cm³)
Q9. I am unsure on how to get the final answer. I believe we have to convert the number to scientific notation but I’m not sure how they got that answer.
3) Multiply 6.4 x 10^-3 times 8.0 x 10^7 and express the answer in scientific notation.(a) 5.1 x 10^-21(b) 5.1 x 10^–3(c) 5.1 x 10^3(d) 5.1 x 10^4(e) 5.1 x 10^5
Step by step 4) Round off the following measurement to three significant digits: 14,546 cm.(a) 145 cm (b) 146 cm(c) 14,500 cm (d) 14,600 cm(e) 15,000 cm
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Chapter 1 Solutions
Chemistry: Principles and Practice
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