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Water, pH and Macromolecules

Water, pH and Macromolecules
Who discovered and described the blood groups (ABO) classification?

Karl Hooper
Otto Warburg
Karl Landsteiner
Theodor Kocher

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Water, pH and Macromolecules
Which of the following will easily dissolve in a polar solvent?

gasoline (heptanes & octanes)
methane
argon
sodium chloride

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Water, pH and Macromolecules
The effectiveness or capacity of a buffer solution can be affected by

both (a) and (b)
temperature of buffer components
molar concentration of the buffer components
concentration of the conjugate base to the weak acid

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Water, pH and Macromolecules
A solution with pH = 5 is __________ than a solution with pH = 7.

10 times more acidic
100 times more acidic
10 times more basic
2 times more basic

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Water, pH and Macromolecules
The dissociation constant of H2O at 25° C is

10-14 M
1014 M
10-7 M
107 M

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Water, pH and Macromolecules
If protein is made exclusively from nonpolar amino acids, then it will this protein interact with water?

It will be attracted to water
be repelled by water
It will form a membrane in water
It will act as a buffer and stabilize the pH

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