Measurements Quiz 1

Measurements Quiz 1 - a 1 cm = 10-2 m b 10 6 = mega...

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CHAPTER 1 CHEM 120 PRACTICE QUIZ 1 Measurements NAME _____________________________________________SCORE___________ (2pts) 1. How many significant figures are in the following measured quantities? a) 5000.0 cm 5 b) 0.0708 cm 3 (1pt) 2. Round off each of the following to the # of significant figures indicated. a) 800.7 (3) 801 b) 0.008230 (2) 0.0082 (1pt) 3. Perform the following calculations and express your answer in scientific notation to the correct number of significant figures. a) 11.2 + 0.005 + 335.01 = 346.2 = 3.5 x 10 2 b) 1.584 x 62.0 = 19 = 1.9 x10 1 5.2 (1pt) 4.Complete the following. For a) use a number ; b) use a prefix
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Unformatted text preview: a) 1 cm = 10-2 m b) 10 6 = mega meter (2pts) 5.Convert 45 mL to kiloliters. 4.5 x 10-5 KL (1pt) 6. Metric system uses degrees celsius C S. I system uses K (1pt) 7.What is the volume of a half pound (227g) of olive oil if its density is 0.92 g/mL? 246.7 ml (unrounded) 250 ml (with correct sig figs) (1pt) 8. What is wrong with the statement "the number of people in my group is exactly 6.0"? To count number of people you cannot go to one place or more after the decimal point...
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This test prep was uploaded on 04/10/2008 for the course CHEM 231 taught by Professor Hanover during the Spring '08 term at Lansing.

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