Conceptual Integrated Science
3rd Edition
ISBN: 9780135197394
Author: Hewitt, Paul G., LYONS, Suzanne, (science Teacher), Suchocki, John, Yeh, Jennifer (jennifer Jean)
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 12, Problem 95TE
To determine
To state:
The reason as to why breathing a mixture of helium and oxygen rather than air helps divers in getting bends.
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Scuba divers are warned that if they must make a rapid ascent, they should exhale on the way up. If a diver rapidly ascends to the surface with lungs full of air, his lungs could be damaged. Explain why this is so.
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. The tracheae begin at the surface of the insect's body and penetrate into the interior. Suppose that a tracheae is 1.83 mm long with a cross-sectional area of 1.47 x 10-9m2. The concentration of oxygen in the air outside the insect is 0.651 kg/m3, and the diffusion constant is 1.79 x 10-5 m2/s. If the mass per second of oxygen is diffusing through a trachea is 1.77 x 10-12 kg/s, then find the oxygen concentration at the interior end of the tube.
Fish can adjust their buoyancy with an organ called the swim bladder. The swim bladder is a flexible gas-filled sac; the fish can increase or decrease the amount of gas in the swim bladder so that it stays neutrally buoyant—neither sinking nor floating. Suppose the fish is neutrally buoyant at some depth and then goes deeper. What needs to happen to the volume of air in the swim bladder? Will the fish need to add or remove gas from the swim bladder to maintain its neutral buoyancy?
Chapter 12 Solutions
Conceptual Integrated Science
Ch. 12 - How many electrons can occupy the first shell? How...Ch. 12 - Which electrons are represented by an electron-dot...Ch. 12 - Prob. 3RCCCh. 12 - How does an ion differ from an atom?Ch. 12 - To become a negative ion, does an atom lose or...Ch. 12 - Prob. 6RCCCh. 12 - Prob. 7RCCCh. 12 - Prob. 8RCCCh. 12 - Prob. 9RCCCh. 12 - Prob. 10RCC
Ch. 12 - Prob. 11RCCCh. 12 - Prob. 12RCCCh. 12 - Why do nonpolar substances boil at relatively low...Ch. 12 - Which has a greater degree of symmetry-a polar...Ch. 12 - Why dont oil and water mix?Ch. 12 - Prob. 16RCCCh. 12 - What is a hydrogen bond?Ch. 12 - Are induced dipoles permanent?Ch. 12 - What happens to the volume of a sugar solution as...Ch. 12 - Prob. 20RCCCh. 12 - Is concentration typically given with the volume...Ch. 12 - Why does the solubility of a gas solute in a...Ch. 12 - Why do sugar crystals dissolve faster when...Ch. 12 - Is sugar a polar or nonpolar substance?Ch. 12 - Do metals more readily gain or lose electrons?Ch. 12 - What is an alloy?Ch. 12 - What is a native metal?Ch. 12 - Prob. 28TISCh. 12 - Prob. 29TISCh. 12 - How is a solution different from a suspension?Ch. 12 - Prob. 36TCCh. 12 - Prob. 37TCCh. 12 - Rank the following in order of increasing...Ch. 12 - Rank the following in order of decreasing boiling...Ch. 12 - Rank these solutions in order of increasing...Ch. 12 - Rank the following compounds in order of...Ch. 12 - Prob. 42TSCh. 12 - Prob. 43TSCh. 12 - Prob. 44TSCh. 12 - How much sodium chloride, in grams, is needed to...Ch. 12 - If water is added to 1mole of sodium chloride in a...Ch. 12 - Prob. 47TECh. 12 - Prob. 48TECh. 12 - How many more electrons can fit within the valence...Ch. 12 - Prob. 50TECh. 12 - What happens when hydrogens electron gets close to...Ch. 12 - Why does an atom with few valence electrons tend...Ch. 12 - Why it is so easy for a magnesium atom to lose two...Ch. 12 - Why doesnt the neon atom tend to lose or gain any...Ch. 12 - Sulfuric acid, H2SO4, loses two protons to form...Ch. 12 - Prob. 56TECh. 12 - Which should be more difficult to pull apart: a...Ch. 12 - Given that the total number of atoms on our planet...Ch. 12 - Prob. 59TECh. 12 - Two fluorine atoms join together to form a...Ch. 12 - How are metallic bonds similar to ionic bonds? How...Ch. 12 - What drives an atom to form a covalent bond: its...Ch. 12 - Atoms of nonmetallic elements form covalent bonds,...Ch. 12 - Prob. 64TECh. 12 - Prob. 65TECh. 12 - Prob. 66TECh. 12 - In each molecule, which atom carries the greater...Ch. 12 - Which is more polar: a sulfur-bromineS-Br bond or...Ch. 12 - True or False: The greater the nuclear charge of...Ch. 12 - True or False: The more shells in an atom, the...Ch. 12 - Water, H2O, and methane, CH4, have about the same...Ch. 12 - Circle the molecule from each pair that should...Ch. 12 - Three kids sitting equally apart around a table...Ch. 12 - Why is the oxygen atom of a water molecule...Ch. 12 - Look to the molecules listed in Table 12.2. How...Ch. 12 - Which is stronger: the covalent bond that holds...Ch. 12 - The charges with sodium chloride are all...Ch. 12 - Prob. 78TECh. 12 - Prob. 79TECh. 12 - Why is calcium fluoride, CaF2, a high melting...Ch. 12 - Of the two structures shown here, one is a typical...Ch. 12 - Mixtures can be separated into their components by...Ch. 12 - Why cant the elements of a compound be separated...Ch. 12 - Many dry cereals are fortified with iron, which is...Ch. 12 - Classify the following as element, compound, or...Ch. 12 - Which of the following boxes best represents a...Ch. 12 - Which is more dense: air saturated with water...Ch. 12 - How many sugar molecules are there in a 2M sugar...Ch. 12 - Prob. 89TECh. 12 - Which should weigh more: 100mL of fresh water or...Ch. 12 - Prob. 91TECh. 12 - The boiling point of 1, 4-butanediol is 230C....Ch. 12 - Based on atomic size, which would you expect to be...Ch. 12 - If nitrogen, N2, were pumped into your lungs at...Ch. 12 - Prob. 95TECh. 12 - Account for the observation that ethanol, C2H5OH,...Ch. 12 - At 10C, which is more concentrated: a saturated...Ch. 12 - Why is rain or snow called precipitation?Ch. 12 - Hydrogen chloride HCl is a gas at room...Ch. 12 - Some bottled water is now advertised as containing...Ch. 12 - Two plastic bottles of fresh seltzer water are...Ch. 12 - Would you expect to find more dissolved oxygen in...Ch. 12 - What should be done with mining pits after all...Ch. 12 - What are some of the obstacles people face when...Ch. 12 - Oxygen, O2, dissolves quite well within a class of...Ch. 12 - Prob. 1RATCh. 12 - Prob. 2RATCh. 12 - Why are ores so valuable? a They are sources of...Ch. 12 - In terms of the periodic table, is there an abrupt...Ch. 12 - When nitrogen and fluorine combine to form a...Ch. 12 - Prob. 6RATCh. 12 - Someone argues that you shouldnt drink tap water...Ch. 12 - Prob. 8RATCh. 12 - Fish dont live very longer in water that has just...Ch. 12 - Prob. 10RAT
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- In order to draw air into your lungs, your diaphragm and other muscles contract, increasing the lung volume. This lowers the air pressure of the lungs to below atmospheric pressure, and air flows in. When your diaphragm and other muscles relax, the volume of the lungs decreases, and air is forced out. (a) If the total volume of your lungs at rest is 5.31 L and the initial pressure is 749 mmHg, what is the new pressure if the lung volume is increased to 5.45 L? mmHg(b) If the total volume of your lungs at rest is 5.31 L and the initial pressure is 749 mmHg, at what volume will the pressure be 769 mmHg? Larrow_forwardDuring inspiration, the volume of the lungs is actively increased by the action of the diaphragm. As the volume of the lungs increases, the pressure within the lungs falls about 1 mmHg below atmospheric pressure. Air rushes into the lungs due to this pressure difference. Bronchi, Bronchial Tree, and Lungs Larynx - Primary bronchi Secondary bronchi Tertiary bronchi. Bronchioles Cardiac notch Pulmonary artery Trachea Pulmonary vein Alveolar duct Alveoli This image is part of the Public Domain: https://upload.wikimedia.org/wikipedia/commons/d/db/Illu_bronchi_lungs.jpg Fig. 1: The bronchi, bronchial trees, and the lungs. (a) The diameter of the trachea (windpipe) is about 17 mm. What net force does the air experience during inhalation? F net = N (b) The flow rate of air entering the lungs is about 1.1 through the windpipe? V windpipe = ст S What is the velocity of air moving Sarrow_forward45. Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tra- cheae, through which oxygen diffuses into their bodies. The tracheae begin at the surface of an insect's body and penetrate into the interior. Suppose that a trachea is 1.9 mm long with a cross-sectional area of 2.1 × 10-º m². The concentration of oxygen in the air outside the insect is 0.28 kg/m², and the diffusion constant is 1.1 × 10-5 m²/s. If the mass per second of oxygen diffusing through a trachea is 1.7 X 10-12 kg/s, find the oxygen concentra- tion at the interior end of the tube.arrow_forward
- If you are infusing a 1 L Iv bag of a normal saline at a rate of 100 ml per hour, how long will it take for the entire IV bag to infuse into the patient ?arrow_forwardDuring inspiration, the volume of the lungs is actively increased by the action of the diaphragm. As the volume of the lungs increases, the pressure within the lungs falls about 1 mmHg below atmospheric pressure. Air rushes into the lungs due to this pressure difference. Bronchi, Bronchial Tree, and Lungs Larynx Primary bronchi Secondary bronchi Tertiary bronchi Bronchioles Cardiac notch Pulmonary artery Trachea Pulmonary vein Alveolar duct Alveoli This image is part of the Public Domain: https://upload.wikimedia.org/wikipedia/commons/d/db/Illu_bronchi lungs.jpg Fig. 1: The bronchi, bronchial trees, and the lungs. (a) The diameter of the trachea (windpipe) is about 17 mm. What net force does the air experience during inhalation? F = 0.03026 N net L (b) The flow rate of air entering the lungs is about 1.1 . What is the velocity of air moving S through the windpipe? ст windpipe 398.31 Sarrow_forwardA deep-sea diver should breathe a gas mixture that has the same oxygen partial pressure as at sea level, where dry air contains 20.9% oxygen and has a total pressure of 1.01×105 N/m2 . (a) What is the partial pressure of oxygen at sea level?(b) If the diver breathes a gas mixture at a pressure of 2.00×106 N/m2 , what percent oxygen should it be to have the same oxygen partial pressure as at sea level?arrow_forward
- You are an astronaut exploring a new planet in a distant solar system. This planet has an atmospheric pressure of 3,040 mm Hg at sea level. The oxygen content of the planet’s air is 15%. What is the partial pressure of oxygen on this planet at sea level?arrow_forwardBill is going for a swim in the ocean. The density of the water (salt water) is 1.027 g/m3. Bill has a density of 1.043 g/m3 when he blows out all of his air. When bill enters the water and blows out all of his air, will he sink or float?arrow_forwardThe radius of an artery decreases from 1.2 to 0.50 cm due to atherosclerosis. If the average blood velocity in the narrow region is 40 cm/s, what is the average velocity in the wider region in units of cm/s. (96 6.9 920 230 40 1300 N 10°C aas lblarrow_forward
- It takes 10 seconds to fill a ¼ liter jar with water from your kitchen faucet. What is the flow rate, in lpm, from the faucet? Group of answer choices 1.5 40 4 10arrow_forwardWe’ve seen that fish can control their buoyancy through the use of a swim bladder, a gas-filled organ inside the body. You can assume that the gas pressure inside the swim bladder is roughly equal to the external water pressure. A fish swimming at a particular depth adjusts the volume of its swim bladder to give it neutral buoyancy. If the fish swims upward or downward, the changing water pressure causes the bladder to expand or contract. Consequently, the fish must adjust the quantity of gas to restore the original volume and thus reestablish neutral buoyancy. Consider a large, 7.0 kg striped bass with a volume of 7.0 L. When neutrally buoyant, 7.0% of the fish’s volume is taken up by the swim bladder. Assume a bodytemperature of 15°C.a. How many moles of air are in the swim bladder when the fish is at a depth of 80 ft?b. What will the volume of the swim bladder be if the fish ascends to a 50 ft depth without changing the quantity of gas?c. To return the swim bladder to its original…arrow_forwardThe blood pressure is 80 mmHg diastolic and 120 mmHg systolic which equal to: 10640 N/cm2 and 15960 n/cm2 O 10.640 kPa and 15.960 kPa 10.640 mmHg and 15.960 mmHg 10640 kPa and 15960 kPa 10640 cmHg and 15960 cmHgarrow_forward
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