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Quiz 1-solutions

# Quiz 1-solutions - Version 022/AABBC – Quiz 1 – Lyon...

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Unformatted text preview: Version 022/AABBC – Quiz 1 – Lyon – (52635) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points ? refers to how closely individual measure- ments agree with each other. 1. precision correct 2. accuracy Explanation: 002 10.0 points The density average for three measurements of a sample of olive oil was determined to be . 92362 ± . 0026431 g/mL at 25 . ◦ C. Which of the following is the correct choice for record- ing the density of ethanol? 1. . 924 ± . 003 g/mL correct 2. . 924 ± . 002 g/mL 3. . 92 ± . 003 g/mL 4. . 9236 ± . 0026 g/mL 5. . 924 ± . 0026 g/mL Explanation: 003 10.0 points Round off 0 . 04721 m to two significant figures. 1. . 0472 m 2. . 047 m correct 3. . 04721 m 4. . 0471 m 5. . 05 m Explanation: . 047 21 m = 0 . 047 m or 4 . 7 × 10 − 2 μ m 004 10.0 points How many significant digits should be re- ported for the solution to the following nu- merical problem?merical problem?...
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Quiz 1-solutions - Version 022/AABBC – Quiz 1 – Lyon...

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