Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 2, Problem 5CT
Manufacturers make carbonated drinks by forcing pressurized carbon dioxide gas into flavored water. A
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Which of the following describes a buffer?
A. The measure of the amount of hydrogen ions in a liquid
B. A set of chemicals that can keep the pH of a solution stable by alternately donating and accepting the ions that contribute to pH
C. A substance that releases hydrogen ions in water
D. A substance that accepts hydrogen ions in water
imagine you have 3 beakers of water. the water temp in beaker 1 is 0c, beaker 2 is 24c, and beaker 3 is 45c. if you place the same amount of potassium permanganate crystals into these 3 beakers, predict what would happen to the crystals
which of the following is a characteristic of a buffer?
a. The pH will go down significantly when H3O+ is added to the buffer
b. The pH will go down very slightly when H3O+ is added to the buffer
c. The pH will go up significantly when H3O+ is added to the buffer
Chapter 2 Solutions
Human Biology (MindTap Course List)
Ch. 2 - Distinguish between an element, an atom, and a...Ch. 2 - Explain the difference between an ionic bond and a...Ch. 2 - Ionic and covalent bonds join atoms into...Ch. 2 - Name three vital properties of water in living...Ch. 2 - Which small organic molecules make up...Ch. 2 - Which of the following is the carbohydrate, the...Ch. 2 - Describe the four levels of protein structure. How...Ch. 2 - Distinguish among the following: a....Ch. 2 - The backbone of organic compounds forms when...Ch. 2 - A carbon atom can form up ________ to bonds with...
Ch. 2 - All of the following except ________ are building...Ch. 2 - Prob. 4SQCh. 2 - Prob. 5SQCh. 2 - Prob. 6SQCh. 2 - Which phrase best describes what a functional...Ch. 2 - In ________ reactions, small molecules are linked...Ch. 2 - Match each type of molecule with its description....Ch. 2 - What kinds of bonds often control the shape (or...Ch. 2 - The pH of black coffee is 5, and that of milk of...Ch. 2 - Draw a shell model of an uncharged nitrogen atom....Ch. 2 - Prob. 3CTCh. 2 - Manufacturers make carbonated drinks by forcing...
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- Name three vital properties of water in living cells.arrow_forwardThe pH of lemon juice is about 2.0, whereas tomato juice’s pH is about 4.0. Approximately how much of an increase in hydrogen ion concentration is there between tomato juice and lemon juice? a. 2 times b. 10 times c. 100 times d. 1000 timesarrow_forwardUsing a pH meter, you find the pH of an unknown solution to be 8.0. How would you describe this solution? a. weakly acidic b. strongly acidic c. weakly basic d. strongly basicarrow_forward
- Some undiluted acids are not as corrosive as when they are diluted with water. That is why lab workers are told to wipe off splashes with a towel before washing. Explain.arrow_forwardAmelia tests several substances in her house to determine their pH values and records the results. Substance pH Lemon juice 2.3 Tap water 6.7 Bleach 12.3 Soapy water 11.7 Can of tomatoes 4.5 Dishwasher detergent 10.9 What do the basic substances have in common? A They are all used in cooking. B They are all used in cleaning products. C They are all clear or transparent. D They are all sour tasting when eaten.arrow_forwardWhat is the pH of a solution that has a higher concentration of H+ ions than water? A. > 7 B. 7 C.< 7arrow_forward
- Indicate whether each of the following is due to an increase in pH, a decrease in pH or neither and explain why: __Makes carrots soften more when cooked __Color shifts due to adding chlorine to cake flour __Lowers the amount of iron sulfide formed in hard cooked eggs __Makes anthocyanins more red __Makes an egg white foam more stable __Makes starch dextrinize when heated in boiling water __Raises osmotic pressurearrow_forwardWhen comparing pH, a solution with a pH of 5 contains 100 times the amount of H+ when compared to a solution with a pH of 7.arrow_forwardDescribe the way an ionic solid dissolves in waterarrow_forward
- Which pH value indicates a solution that has more hydrogen ions that hydroxide ions? pH 9 pH 4 pH 7arrow_forwardIn the picture below, both persons carry the same mass of rock salt to be dissolved in the same volume of water. Which of the following statements below is true? a. The rock salt of person A will dissolve slower because of the larger surface area. b. The rock salt of person B will dissolve faster because of the smaller surface area. c. The rock salt of person B will dissolve faster though the surface area of the salt is the same with that of person A. d. The rock salt of person A will dissolve slower because it does not have a larger surface area than in B.arrow_forwardWhy liquid is more difficult to move than air?arrow_forward
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