EBK CAMPBELL BIOLOGY
11th Edition
ISBN: 8220103613828
Author: Reece
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 12TYU
SYNTHESIZE YOUR KNOWLEDGE
How do cats drink? Scientists using high speed video have shown that cats use an interesting technique to drink aqueous substances like water and milk. Four times a second, the cat touches the tip of its tongue to the water and draws a column of water up into its mouth (as you can see in the photo), which then shuts before gravity can pull the water back down. Describe how the properties of water allow cats to drink in this fashion, including how water's molecular structure contributes to the process.
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Activity B: Molecules in Motion
Brownian movement occurs when particles in a solution move because they are being struck by other particles in a solution. This was first discovered by Dr. Robert Brown in 1827
when he was observing pollen grains in water under a microscope. To observe this ourselves, we will look at carmine particles suspended in water under a microscope.
a Brownian Motion
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Which statement best describes the movement of the particles?
O The particles are dashing through the field of view.
The particles are slightly vibrating.
The particles are traveling in large circle patterns.
O The particles are not moving at all.
Don't explain, I just want the correct choise
In an experiment, a 0.001 (mole fraction) solution of polysaccharide in water is made and is placed in the compartment A (see Figure below). Compartment B is filled with pure water. The two compartments are separated by a porous semi-permeable membrane that allows the exchange of water molecules between the two compartments, but not that of the larger polysaccharide molecules
a) Show that the chemical potential of water in compartment A is lower than that in compartment B by 2.48 J/mol.
b) As a result of this chemical potential difference, water molecules will move from compartment B to compartment A. This causes the pressure in compartment A, relative to that in B, to increase. How would this affect the chemical potential of water in compartment B? When would the diffusion of water from B to A cease (i.e. equilibrium is achieved)?
c) Using your answer to part (b), work out the difference between the pressure in compartment A and B when…
Chapter 3 Solutions
EBK CAMPBELL BIOLOGY
Ch. 3.1 - MAKE CONNECTIONS What is electronegativity, and...Ch. 3.1 - WHAT IF? What would be the effect on the...Ch. 3.1 - Why is it unlikely that two neighboring water...Ch. 3.1 - WHAT IF? What would be the effect on the...Ch. 3.2 - Prob. 1CCCh. 3.2 - Prob. 2CCCh. 3.2 - WHAT IF? A water strider (an insect that can walk...Ch. 3.2 - WHAT IF? A water strider (an insect that can walk...Ch. 3.2 - Prob. 5CCCh. 3.3 - Compared with a basic Solution at pH 9, the same...
Ch. 3.3 - HCl is a strong acid that dissociates in water:...Ch. 3.3 - Prob. 3CCCh. 3.3 - Prob. 4CCCh. 3 - DRAW IT Label a hydrogen bond and a polar...Ch. 3 - Describe how different types of solutes dissolve...Ch. 3 - Explain what happens to the concentration...Ch. 3 - Which of the following is a hydrophobic material?...Ch. 3 - Prob. 2TYUCh. 3 - Measurements show that the pH of a particuiar lake...Ch. 3 - What is the hydroxide ion concentration of the...Ch. 3 - A slice of pizza has 500 kcal. If we could burn...Ch. 3 - DRAW IT Draw the hydration shells that form around...Ch. 3 - In agricultural areas, farmers pay close attention...Ch. 3 - MAKE CONNECTIONS What do climate change (see...Ch. 3 - EVOLUTION CONNECTION This chapter explains how the...Ch. 3 - Prob. 10TYUCh. 3 - WRITE ABOUT A THEME: ORGANIZATION Several emergent...Ch. 3 - SYNTHESIZE YOUR KNOWLEDGE How do cats drink?...
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