CHEM:STRUCTURE&PROPERTIES PKG
CHEM:STRUCTURE&PROPERTIES PKG
15th Edition
ISBN: 9781323184783
Author: Tro
Publisher: PEARSON C
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Chapter A2, Problem 6E

Indicate the number of significant figures in each number. If the number is an exact number, indicate that it has an unlimited number of significant figures.
a. 305,435,087 (2008 U.S. population)
b. 2.54 cm = 1 in
c. 11.4 g/cm3 (density of lead)
d. 12 = 1 dozen

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The density of magnesium is 1.7 g/cm3 , and the density of iron is 7.9 g/cm3 . Consider a block of iron with a mass of 819g. What is the mass of a block of magnesium that has the same volume as the block of iron?
density of unknown liquid initial mass of erlenmeyer flask 123.789 g final mass of erlenmeyer flask 131.618 g mass of water 10.00 g volume of water 10.00 mL what is denisty of unknown liquid? average density of liquid g/mL, show calculations:
Iron has a density of 7.86 g/cm37.86 g/cm3 (1 cm3=1 mL1 cm3=1 mL). Calculate the volume (in dLdL) of a piece of iron having a mass of 4.32 kgkg . Note that the density is provided in different units of volume and mass than the desired units of volume (dLdL) and the given units of mass (kgkg). You will need to express the density in kg/dLkg/dL (1 cm3 = 1 mL1 cm3 = 1 mL) before calculating the volume for the piece of iron. Express your answer to three significant figures.
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