Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 2, Problem 2ITD
Summary Introduction
To review:
The molar concentration of the following:
Introduction:
The gastroesophageal reflux (GERD) disease is known to be a digestive disorder, which mainly affects the lower segment of esophageal sphincter, which is basically the ring of muscle found between the stomach and esophagus. The condition when the pH (potential of hydrogen) of esophagus drops below 7, the reflux is said to take place.
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In a hospital laboratory, a 10.0 mL sample of gastric juice, obtained several hours after a meal, was titrated with 0.01 M NaOH to neutral pH of 7.0; 72.0 mL of NaOH was required for this titration. The patient’s stomach contained no ingested food or drink, thus assume that no buffers were present.
What was the pH of the 10.0 mL gastric juice sample before titrating with NaOH?
Chemical X is a contaminant present in low quantities in drinking water. Its molecular size is about 80
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The pH level of the human blood must be maintained at a pH within 7.35-7.45. Excess acidity or basicity in the blood, brought about by the food we take, would lead to disorder in the metabolic processes; at times, the right amount of oxygen will not be circulated to the tissues. Our natural filter, the kidneys, help preserve the normal pH level of the body. Discuss ways that we can do so as not to overwork our kidneys in order to maintain the pH balance of our body.
Chapter 2 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 2.1 - Distinguish between an element and an atom, and...Ch. 2.2 - Prob. 1SBCh. 2.2 - Prob. 2SBCh. 2.2 - Prob. 3SBCh. 2.3 - Prob. 1SBCh. 2.3 - Prob. 2SBCh. 2.3 - Prob. 3SBCh. 2.3 - Prob. 4SBCh. 2.4 - Prob. 1SBCh. 2.4 - Prob. 2SB
Ch. 2.5 - Prob. 1SBCh. 2.5 - Why are buffers important for living organisms?Ch. 2 - Which of the following statements about the mass...Ch. 2 - Oxygen (O) is a(n) _______; the oxygen we breathe...Ch. 2 - The chemical activity of an atom: a. depends on...Ch. 2 - When electrons are shared equally between atoms,...Ch. 2 - Which of the following is not a property of water?...Ch. 2 - The water lattice: a. is formed from hydrophobic...Ch. 2 - A hydrogen bond is: a. a strong attraction between...Ch. 2 - Apply Evolutionary Thinking What properties of...Ch. 2 - If pond water has a pH of 5, the hydroxide...Ch. 2 - Prob. 10TYKCh. 2 - Prob. 11TYKCh. 2 - Prob. 12TYKCh. 2 - Discuss Concepts You place a metal pan full of...Ch. 2 - Prob. 14TYKCh. 2 - Prob. 15TYKCh. 2 - The pH of human stomach acid ranges from 1.0 to...Ch. 2 - Prob. 2ITDCh. 2 - Prob. 3ITD
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