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Chapter 2: Q.2.58 (page 45)
Perform each of the following conversions using metric and U.S. conversion factors:
a. 0.21 lb to grams
b. 11.6 in. to centimeters
c. 0.15 qt to milliliters
d. 35.41 kg to pounds
a.
b.
c.
d.
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Round off each of the following calculator answers to three significant figures:
a. b.
c. d.
e..
Determine thedensity(g/mL)foreachofthefollowing:
a. A 20.0-mL sample of a salt solution has a mass of 24.0 g.
b. A cube of butter weighs 0.250 lb and has a volume of 130.3 mL.
c. A gem has a mass of 4.50 g. When the gem is placed in a graduated cylinder containing 12.00 mL of water, the water level rises to 13.45 mL.
d. A 3.00-ml sample of medication has a mass of 3.85 g.
In an old trunk, you find a piece of metal that you think may be aluminum, silver, or lead. You take it to a lab, where you find it has a mass of 217 g and a volume of 19.2 cm3. Using Table 2.8, what is the metal you found?
Write the equality and two conversion factors, and identify the numbers as exact or give the number of significant figures for each of the following:
a. One yard is
b. One kilogram is
c. A car goesonof gas .
d. Sterling silver is silver by mass.
Round off or add zeros to the following calculated answers to give a final answer with three significant figures: (2.2)
a.
b. localid="1652069638449"
c.
d.
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