Measurements Quiz 2

# Measurements Quiz 2 - to the correct number of significant...

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Chapter 1 CHEM 120 PRACTICE QUIZ 2 Measurement Name ____________________________________________Score ___________ (2pts) 1. Metric Prefixes a) The abbreviation for the prefix micro is μ b) Deci means _ 1/10 th of the base unit c) 1 megagram = 10 6 gram (number) d) 1 cm = 0.01 m (number) (3pts) 2. Exponential Notation/Significant Figures a) Express 4082.2 in scientific notation 4.0822 x 10 3 b) How many significant figures are in 0.03670? 4 Explain your answer (ie state the rule etc. ..) c) How many significant figures are in 20405? 5 (1pt) 3. Solve the following problems, expressing the answer in scientific notation and

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Unformatted text preview: to the correct number of significant figures. a) 1.906 x l0 2 x 4.6 x 10 3 = 4.4 x 10 3 b) 1986 + 23.48 + 0.012 = 2009 2.01 x 10 2 (2pts)4. Convert 175 mm to Mm. 1.75 x 10-7 Mm (1pt) 5. How many liters of gasoline will be used to drive 500 miles in a car that averages 34 miles per gallon? 1L = 1.06 qt (need additional conversion 4 quarts = 1 gallon) 55 L (unrounded) 60 L (with sig figs) (1pt) 6. The ones marked in red are incorrect MegaLiter (ML); micrometer (μm); microquart (μqts); deciliter (dL), megagallon (Mgal); kiloliter (KL); milliseconds (ms); centigram (cg)...
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Measurements Quiz 2 - to the correct number of significant...

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