Water, pH and Macromolecules Which of the following organic groups are found in naturally occuring amino acids? Indole Imidazole All of these Guanidinium ion Indole Imidazole All of these Guanidinium ion ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A solution with pH = 5 is __________ than a solution with pH = 7. 100 times more acidic 2 times more basic 10 times more acidic 10 times more basic 100 times more acidic 2 times more basic 10 times more acidic 10 times more basic ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following character does not apply to water? The water molecule is asymmetric The water molecule readily forms hydrophobic interactions The covalent bonds in water are highly polarized All three atoms in the water molecule readily form hydrogen bonds The water molecule is asymmetric The water molecule readily forms hydrophobic interactions The covalent bonds in water are highly polarized All three atoms in the water molecule readily form hydrogen bonds ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following statements about water is correct? Nonpolar substances like oils are not soluble in it Polar substances that can form hydrogen bonds will dissolve in it It is critical for many of the chemical processes found in living systems All of these Nonpolar substances like oils are not soluble in it Polar substances that can form hydrogen bonds will dissolve in it It is critical for many of the chemical processes found in living systems All of these ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules What is the concentration, in moles/liter, of the hydrogen ion, if pH of a solution is 7? 7 x 10-7 1 x 10-7 5 x 10-7 7 7 x 10-7 1 x 10-7 5 x 10-7 7 ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Polyprotic acids such as H3PO4, can act as acid-base buffers if their concentration is kept low at pH values around neutrality at pH values around any of their pKa's only in combination with polyprotic bases if their concentration is kept low at pH values around neutrality at pH values around any of their pKa's only in combination with polyprotic bases ANSWER DOWNLOAD EXAMIANS APP
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