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Post-lab 1 Measurement-problems

# Post-lab 1 Measurement-problems - wetsel(zpw67 Post-lab 1...

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wetsel (zpw67) – Post-lab 1 Measurement – lyon – (51900) 1 This print-out should have 28 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001(part1of4)10.0points Calculate 720 . 0 + 5 . 4 × 10 2 - 117 - 0 . 064 and report the result using the correct number of significant digits. Your answer must be within ± 0.0% 002(part2of4)10.0points Calculate 0 . 834 × 52 . 48 0 . 09 × 2 . 51 and report the result using the correct number of significant digits. Your answer must be within ± 0.0% 003(part3of4)10.0points Calculate 374 . 82 - 15 . 74 × 3 and report the result using the correct number of significant digits. Your answer must be within ± 0.0% 004(part4of4)10.0points Calculate 2516 . 32 × 1 . 13 × 10 4 6 . 00 + 8 . 7 × 10 2 - 684 . 2 × 0 . 0030 and report the result using the correct number of significant digits. Your answer must be within ± 0.0% 005 10.0points What is a chemical change? 1. oxygen produced from the breakdown of nutrients 2. melted ice cream 3. erosion of rock by the wind 4. sugar cube dissolved in water 006 10.0points Standard deviation is a measure of the scatter in the data. Does a small value for stan- dard deviation indicate high precision or low precision? 1. high precision 2. low precision 3. Cannot determine from the information given. 4. Both 1 and 2.

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Post-lab 1 Measurement-problems - wetsel(zpw67 Post-lab 1...

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