Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? H2PO4-/HPO42- All of these Histidine+/histidine H2CO3/HCO3- H2PO4-/HPO42- All of these Histidine+/histidine H2CO3/HCO3- ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The reason that fats contain more energy than simple sugars, is fats have many more hydrogen atoms covalent bonds hydrogen bonds carbon atoms hydrogen atoms covalent bonds hydrogen bonds carbon atoms 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 does not dissolve well in water is probably held together by noncovalent bonds should act as a good buffer for acids and bases contains at least some polar covalent bonds does not dissolve well in water is probably held together by noncovalent bonds should act as a good buffer for acids and bases 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? 5 x 10-7 1 x 10-7 7 7 x 10-7 5 x 10-7 1 x 10-7 7 7 x 10-7 ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The main difference between an acid and a base is that acids donate hydrogen ions in water while bases accept hydrogen ions bases donate hydrogen ions in water while acids accept hydrogen ions acids are polar molecules and bases are not bases are polar molecules and acids are not acids donate hydrogen ions in water while bases accept hydrogen ions bases donate hydrogen ions in water while acids accept hydrogen ions acids are polar molecules and bases are not bases are polar molecules and acids are not ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The pH of a solution is determined by dielectric constant of the medium relative concentration of acids and bases environmental effect concentration of salt dielectric constant of the medium relative concentration of acids and bases environmental effect concentration of salt ANSWER DOWNLOAD EXAMIANS APP
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