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69.
In each
of the following
pairs,
which
has the greater
volume?
a.
1.0 kg of feathers
or 1.0 kg of lead
b.
100 g of gold or 100 g of water
c.
1.0 L of copper
or 1.0 L of mercury
70. Using
Table
1.5, calculate
the volume
of 25.0 g of each of the
following
substances
at 1 atm.
a.
hydrogen
gas
b.
water
c.
iron
Chapter 5 discusses
the properties
of gases. One property
unique
to gases is that they contain
mostly
empty
space. Explain
using
the results
of your calculations.
1. The density of osmium
(the densest
metal)
is 22.57 g/crrr'. If a
1.00kg
rectangular
block
of osmium
has two
dimensions
of
4.00
em X 4.00 ern, calculate
the third dimension
of the block.
72. A copper wire (density
= 8.96 g/cnr') has a diameter of 0.25 mm.
If a sample
of this copper
wire has a mass of 22 g, how long is
the wire?
Classification and Separation
of Matter
73. Match
each
description
below
with
the following
microscopic
pictures.
More than one picture
may fit each description.
A pic
ture may be used more than once or not used at all.
ii
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This note was uploaded on 12/13/2010 for the course CHEM 2301 taught by Professor Bill during the Spring '10 term at South Texas College.
 Spring '10
 bill
 Chemistry, Organic chemistry

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