Introduction To General, Organic, And Biochemistry
12th Edition
ISBN: 9781337571357
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 1, Problem 61P
1-79 A European car advertises an efficiency of 22 km/L, while an American car claims an economy of 30 mi/gal. Which car is more efficient?
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etic energy is the energy of motion. The following two experiments were designed to explore
nether speed or mass plays a bigger role in delemining the amount of kinetic energy.
Speriment 1 was designed to test how speed afects kinetic energy The kinetic energy is
alcutated using a mass of 1.200 kg (mass of an average car) traveling at various speeds
he equation for calculating the kinetic energy of an object is KE-Cm
KE the kinetic energy of the object It is measured in the energy unit of joules (J). m the
mass of the object in klograms (kg)
Vthe speed of the object, measured in meters per second (m/s), which must be squared.
Note 1 joule1 kg x (m/s)
Complete the table for Experiment 1 and find the kinetic energy of the car at differentpeeds in
this experiment, mass is constant, which means that mass does not change.
Experiment 1: Kinetic Energy of a 1,200 kg Car at Difforent Speeds
Mass of Car
Speed of Car
Kinetic Energy
1,200 kg
2.78 m/s
1
1,200 kg
5.55 m/s
2.
3.
1,200 kg
8.33 m/s
4…
Q13.
1.120 Mercury metal is liquid at normal temperatures but
freezes at -38.9°C. What is this temperature in kelvins? in de-
grees Fahrenheit?
1.121 Zinc metal can be purified by distillation (transforming
the liquid metal to vapor, then condensing the vapor back to liq-
uid). The metal boils at normal atmospheric pressure at 1666°F.
What is this temperature in degrees Celsius? in kelvins?
L.122 lodine is a bluish-black solid. It forms a violet-colored
Vapor when heated. The solid melts at 236 F. What is this tem-
perature in degrees Celsius? in kelvins?
Chapter 1 Solutions
Introduction To General, Organic, And Biochemistry
Ch. 1.3 - Problem 1-1 Multiply: (a) (6.49107)(7.22103) (b)...Ch. 1.4 - Problem 1-2 Convert: (a) 64.0oC to Fahrenheit (b)...Ch. 1.5 - Prob. 1.3QCCh. 1.5 - Problem 1-4 Convert the speed of sound, 332 m/s to...Ch. 1.5 - Problem 1-5 An intensive care patient is receiving...Ch. 1.7 - Prob. 1.6QCCh. 1.7 - Problem 1-7 An unknown substance has a mass of...Ch. 1.7 - Prob. 1.8QCCh. 1 - 1-13 Define the following terms: (a) Matter (b)...Ch. 1 - 1-12 The life expectancy of a citizen in the...
Ch. 1 - 1-15 In a newspaper, you read that Dr. X claimed...Ch. 1 - Prob. 4PCh. 1 - 1-17 Write in exponential notation: (a) 0.351 (b)...Ch. 1 - 1-18 Write out in full: (a) 4.03 × l05 (b) 3.2 ×...Ch. 1 - 1-19 Multiply: (a) (2.16 × 105) (3.08 × 1012) (b)...Ch. 1 - Prob. 8PCh. 1 - Prob. 9PCh. 1 - Prob. 10PCh. 1 - Prob. 11PCh. 1 - Prob. 12PCh. 1 - 1-25 How many significant figures are in the...Ch. 1 - 1-26 How many significant figures are in the...Ch. 1 - 1-27 Round off to two significant figures: (a)...Ch. 1 - 1-28 Multiply these numbers, using the correct...Ch. 1 - 1.29 Divide these numbers, using the correct...Ch. 1 - 1-30 Add these groups of measured numbers using...Ch. 1 - 1-31 In the SI system, the second is the base unit...Ch. 1 - 1-32 How many grams are in the following? (a)1 kg...Ch. 1 - 1-33 Estimate without actually calculating which...Ch. 1 - Prob. 22PCh. 1 - 1-35 You are taken for a helicopter ride in Hawaii...Ch. 1 - Prob. 24PCh. 1 - Prob. 25PCh. 1 - 1-38 Make the following conversions (conversion...Ch. 1 - 1.39 Make the following metric conversions: (a)964...Ch. 1 - There are two bottles of cough syrup available on...Ch. 1 - 1-41 A humidifier located at a nursing station...Ch. 1 - 1-42 You drive in Canada where the distances are...Ch. 1 - 1-43 The speed limit in some European cities is 80...Ch. 1 - 1-44 Your car gets 25.00 miles on a gallon of gas....Ch. 1 - 145 Children’s Chewable Tylenol contains 80. mg of...Ch. 1 - 1-46 A patient weighs 186 lbs. She must receive an...Ch. 1 - 1-47 The doctor orders administration of a drug at...Ch. 1 - 1-48 The recommended pediatric dosage of Velosef...Ch. 1 - 1-49 A critical care physician prescribes an IV of...Ch. 1 - 1-50 If an IV is mixed so that each 150 mL...Ch. 1 - 1-51 A nurse practitioner orders isotonic sodium...Ch. 1 - 1-52 An order for a patient reads Give 40. mg of...Ch. 1 - Prob. 41PCh. 1 - Prob. 42PCh. 1 - 1-55 Does the chemical nature of a substance...Ch. 1 - 1-56 The volume of a rock weighing 1.075 kg is...Ch. 1 - 1-57 The density of manganese is 7.21 g/mL, that...Ch. 1 - 1.58 The density of titanium is 4.54 g/mL. What is...Ch. 1 - 1-59 An injection of 4 mg of Valium has been...Ch. 1 - 1-60 The density of methanol at 20oC is 0.791...Ch. 1 - 1-61 The density of dichloromethane, a liquid...Ch. 1 - 1-62 A sample of 10.00 g of oxygen has a volume of...Ch. 1 - Prob. 51PCh. 1 - Prob. 52PCh. 1 - 1-65 While you drive your car, your battery is...Ch. 1 - Prob. 54PCh. 1 - 1-70 (Chemical Connections IA) The average lethal...Ch. 1 - Prob. 56PCh. 1 - 1-75 A brain weighing 1.0 lb occupies a volume of...Ch. 1 - 1-76 If the density of air is 1.25 10-3 g/cc,...Ch. 1 - 1-77 Classify these as kinetic or potential...Ch. 1 - 1-78 The kinetic energy possessed by an object...Ch. 1 - 1-79 A European car advertises an efficiency of 22...Ch. 1 - Prob. 62PCh. 1 - Prob. 63PCh. 1 - Prob. 64PCh. 1 - Prob. 65PCh. 1 - Prob. 66PCh. 1 - Prob. 67PCh. 1 - Prob. 68PCh. 1 - 1-82 When the astronauts walked on the Moon, they...Ch. 1 - 1-83 Which of the following is the largest mass...Ch. 1 - 1-84 Which quantity is bigger in each of the...Ch. 1 - 1-85 In Japan, high-speed “bullet trains” move...Ch. 1 - 1-88 One quart of milk costs 80 cents and one...Ch. 1 - 1-89 Consider butter, density 0.860 g/mL, and...Ch. 1 - 1-90 Which speed is the fastest? (a) 70 mi/h (b)...Ch. 1 - 1-95 You receive an order for 60. mg of meperidine...Ch. 1 - Prob. 77PCh. 1 - Prob. 78PCh. 1 - Prob. 79PCh. 1 - Prob. 80PCh. 1 - Prob. 81PCh. 1 - Prob. 82PCh. 1 - Prob. 83PCh. 1 - Prob. 84PCh. 1 - 1-111 In the hospital, your doctor orders 100. mg...Ch. 1 - 1-112 A febrile, pediatric patient weighs 42...
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- 1-65 While you drive your car, your battery is being charged. How would you describe this process in terms of kinetic and potential energy?arrow_forward1-44 Your car gets 25.00 miles on a gallon of gas. What would be your car’s fuel efficiency in km/L?arrow_forward1-76 If the density of air is 1.25 10-3 g/cc, what is the mass in kilograms of the air in a room that is 5.3 m long, 4.2 m wide, and 2.0 m high?arrow_forward
- 1-67 If 168 g of an unknown liquid requires 2750 cal of heat to raise its temperature from 26oC to 74oC, what is the specific heat of the liquid?arrow_forward1-41 A humidifier located at a nursing station holds 4.00 gallons of water. How many fluid ounces of water will completely fill the reservoir?arrow_forward1-98 The antifreeze-coolant compound used in cars does not have the same density as water. Would a hydrometer be useful for measuring the amount of antifreeze in the cooling system?arrow_forward
- 1-43 The speed limit in some European cities is 80 km/h. How many miles per hour is this?arrow_forward1-62 A sample of 10.00 g of oxygen has a volume of 6702 mL. The same weight of carbon dioxide occupies 5058 mL (a) What is the density of each gas in g/L? (b) Carbon dioxide is used as a fire extinguisher to cut off the fire’s supply of oxygen. Do the densities of these two gases explain the fire-extinguishing ability of carbon dioxide?arrow_forward1-92 A solar cell generates 500. kJ of energy per hour. To keep a refrigerator at 4oC, one needs 250. kcal/h. Can the solar cell supply sufficient energy per hour to maintain the temperature of the refrigerator?arrow_forward
- 1-31 In the SI system, the second is the base unit of time. We talk about atomic events that occur in picoseconds (10-12 s) or even in femtoseconds (10-15 s). But we don’t talk about megaseconds or kiloseconds; the old standards of minutes, hours, and days prevail. How many minutes and hours are 20. kiloseconds?arrow_forward1-77 Classify these as kinetic or potential energy: (a) Water held by a dam (b) A speeding train (c) A book on its edge before falling (d) A falling book (e) Electric current in a lightbulbarrow_forward1-55 Does the chemical nature of a substance change when it melts from a solid to a liquid?arrow_forward
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