Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? Histidine+/histidine H2PO4-/HPO42- All of these H2CO3/HCO3- Histidine+/histidine H2PO4-/HPO42- All of these H2CO3/HCO3- 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 7 x 10-7 7 1 x 10-7 5 x 10-7 7 x 10-7 7 1 x 10-7 ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A Bronsted acid becomes __________ upon losing a proton. a hydronium ion its conjugate base its conjugate acid highly reactive a hydronium ion its conjugate base its conjugate acid highly reactive ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A solution with pH = 5 is __________ than a solution with pH = 7. 2 times more basic 100 times more acidic 10 times more basic 10 times more acidic 2 times more basic 100 times more acidic 10 times more basic 10 times more acidic ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Polyprotic acids such as H3PO4, can act as acid-base buffers at pH values around neutrality if their concentration is kept low at pH values around any of their pKa's only in combination with polyprotic bases at pH values around neutrality if their concentration is kept low at pH values around any of their pKa's only in combination with polyprotic bases ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Who discovered and described the blood groups (ABO) classification? Otto Warburg Karl Hooper Theodor Kocher Karl Landsteiner Otto Warburg Karl Hooper Theodor Kocher Karl Landsteiner ANSWER DOWNLOAD EXAMIANS APP
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