(a)
Interpretation: The maximum density of water needs to be determined.
Concept Introduction: Density is defined as the mass of a substance occupied per unit of volume. It changes with temperature.
(a)
Explanation of Solution
The given graph shows the density of water over the temperature range
From the graph, it can be seen that the maximum density of water is 1.0000 g/mL. This is the point at the peak of the curve obtained when density and temperature are plotted.
Therefore, the maximum density of water is 1.0000 g/mL.
(b)
Interpretation: The temperature at which the maximum density of water occurs needs to be determined.
Concept Introduction: Density is defined as the mass of a substance occupied per unit of volume. It changes with temperature.
(b)
Explanation of Solution
The given graph shows the density of water over the temperature range
From the graph, it can be seen that the maximum density of water is 1.0000 g/mL. This is the point at the peak of the curve obtained when density and temperature are plotted. Now, the point meets the x-axis (where the temperature is plotted) at
Therefore, the temperature at which the maximum density of water occurs is
(c)
Interpretation: Whether it is meaningful to expand the smooth curve if the graph to the left to temperatures below
Concept Introduction: The state of water also changes with a change in temperature. At
(c)
Explanation of Solution
The state of water below
The main reason is that liquid water changes its state from liquid to solid (ice) at
Chapter 15 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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