Water, pH and Macromolecules The lone pair electrons on oxygen in a H20 molecule carry a partial positive charge carry a partial negative charge form covalent bonds in ice are not important for the properties of water carry a partial positive charge carry a partial negative charge form covalent bonds in ice are not important for the properties of water ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A compound that is capable of forming hydrogen bonds with water contains at least some polar covalent bonds should act as a good buffer for acids and bases is probably held together by noncovalent bonds does not dissolve well in water contains at least some polar covalent bonds should act as a good buffer for acids and bases is probably held together by noncovalent bonds does not dissolve well in water 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? 1 x 10-7 7 7 x 10-7 5 x 10-7 1 x 10-7 7 7 x 10-7 5 x 10-7 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 any of their pKa's at pH values around neutrality only in combination with polyprotic bases if their concentration is kept low at pH values around any of their pKa's at pH values around neutrality only in combination with polyprotic bases ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule? Strong base DNA Protein Phospholipid Strong base DNA Protein Phospholipid 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 All of these It is critical for many of the chemical processes found in living systems Polar substances that can form hydrogen bonds will dissolve in it Nonpolar substances like oils are not soluble in it All of these It is critical for many of the chemical processes found in living systems Polar substances that can form hydrogen bonds will dissolve in it ANSWER DOWNLOAD EXAMIANS APP
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