Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 18, Problem 86E
Water is 88.88% oxygen by mass. Oxygen is exactly what a fire needs to grow brighter and stronger. So why doesn't a fire grow brighter and stronger when water is added to it?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The recommended daily caloric intake is 2000 calories (8,400,000J). This is because this is the same value for how much the average body loses to heat and work in a typical day (your change in energy is zero because you take in the same amount of energy you lose).
A) If you lose a total of 8,400,000J (Qout+W=total lost), but consume 1200 calories of food (5,000,000J), what would your change in energy be?
B) Assuming your change in energy is negative (hint-it should be), where does your body get the extra energy to maintain it's temperature?
On food labels, we can read the food-calories of the product. The food calorie is written as "Cal" and it corresponds to 1.000 calories with the lower case 'c! In summary, one food-calorie - 1 kcal = 1 Cal = 4.186 Joules
How many Joules will be released by combustion of 1 kg of rice, if rice has 3,200 food-calories per kilogram?
O 1.3 J
O 13,395,200J
O 13J
O 1,340 J
Consider a man who has 20 kg of body fat when he goes on a hunger strike. Determine how long he can survive on his body fat alone
Chapter 18 Solutions
Conceptual Physical Science (6th Edition)
Ch. 18 - What does sulfur dioxide have to do with acid...Ch. 18 - How do humans generate the air pollutant sulfur...Ch. 18 - Prob. 14RCQCh. 18 - Prob. 15RCQCh. 18 - What elements have the greatest tendency to behave...Ch. 18 - Prob. 17RCQCh. 18 - What happens to a reducing agent as it reduces?Ch. 18 - What is electrochemistry?Ch. 18 - What is the purpose of the salt bridge in a...Ch. 18 - Prob. 21RCQ
Ch. 18 - What is the prime difference between a battery and...Ch. 18 - Prob. 23RCQCh. 18 - What is electrolysis, and how does it differ from...Ch. 18 - Prob. 25RCQCh. 18 - Prob. 26RCQCh. 18 - What metal coats a galvanized nail?Ch. 18 - Prob. 28RCQCh. 18 - What is iron forced to accept during cathodic...Ch. 18 - What happens to the polarity of oxygen atoms as...Ch. 18 - Show that the hydroxide ion concentration in an...Ch. 18 - When the hydronium ion concentration of a solution...Ch. 18 - Show that an aqueous solution having a pH of 5 has...Ch. 18 - When the pH of a solution is 1, the concentration...Ch. 18 - Show that the pH of a solution is 0.301 when its...Ch. 18 - Each year about 1.6 107 (16 million) metric tons...Ch. 18 - Prob. 44TASCh. 18 - Prob. 45TARCh. 18 - The three chemicals listed below are all very weak...Ch. 18 - Rank in order of decreasing pH the rain that fell...Ch. 18 - Prob. 48TARCh. 18 - Review the concept of electronegativity in Section...Ch. 18 - Rank the following molecules from least oxidized...Ch. 18 - An acid and a base react to form a salt, which...Ch. 18 - Identify the acid or base behavior of each...Ch. 18 - Prob. 53ECh. 18 - Prob. 54ECh. 18 - The main component of bleach is sodium...Ch. 18 - Prob. 56ECh. 18 - Prob. 57ECh. 18 - Some molecules are able to stabilize a negative...Ch. 18 - Prob. 59ECh. 18 - Within a neutral solution of supercritical water...Ch. 18 - What is the concentration of hydronium ions in a...Ch. 18 - Can an acidic solution be made less acidic by...Ch. 18 - Bubbling carbon dioxide into water causes the pH...Ch. 18 - Pour vinegar onto beach sand from the Caribbean,...Ch. 18 - What happens to the pH of soda water as it loses...Ch. 18 - Prob. 66ECh. 18 - Prob. 67ECh. 18 - Prob. 68ECh. 18 - Prob. 69ECh. 18 - Hydrogen sulfide, H2S, burns in the presence of...Ch. 18 - Unsaturated fatty acids, such as C12H22O2, react...Ch. 18 - The type of iron that the human body needs for...Ch. 18 - Chemical equations need to be balanced not only in...Ch. 18 - Prob. 74ECh. 18 - Why does a salt bridge last only so long?Ch. 18 - How does turning on the radio while you are...Ch. 18 - What are some key advantages that a fuel-cell...Ch. 18 - Why would a miniaturized fuel cell require a...Ch. 18 - Prob. 79ECh. 18 - Prob. 80ECh. 18 - Copper atoms have a greater tendency to be reduced...Ch. 18 - Clorox is a laundry bleaching agent used to remove...Ch. 18 - Pennies manufactured after 1982 are made of zinc...Ch. 18 - Prob. 84ECh. 18 - Prob. 85ECh. 18 - Water is 88.88% oxygen by mass. Oxygen is exactly...Ch. 18 - Why is the air over an open flame always moist?Ch. 18 - Upon ingestion, grain alcohol, C2H6O, is...Ch. 18 - Your body creates chemical energy from the food...Ch. 18 - Do the digestion and subsequent metabolism of...Ch. 18 - Why is it easier for the body to excrete a polar...Ch. 18 - What is the relationship between the hydroxide ion...Ch. 18 - Prob. 2RATCh. 18 - Sodium hydroxide, NaOH, is a strong base, which...Ch. 18 - Prob. 4RATCh. 18 - Why do we use the pH scale to indicate the acidity...Ch. 18 - When the hydronium ion concentration equals 1...Ch. 18 - Prob. 7RATCh. 18 - Prob. 8RATCh. 18 - How does an atum's electronegativity relate to its...Ch. 18 - Why does a battery that has thick zinc walls last...
Additional Science Textbook Solutions
Find more solutions based on key concepts
The pV-diagram of the Carnot cycle.
Sears And Zemansky's University Physics With Modern Physics
13. Electric Cars
In recent years, practical hybrid cars have hit the road—cars in which the gasoline engine ru...
College Physics: A Strategic Approach (4th Edition)
Which Moon position (F–l) best corresponds with the Moon phase shown in the upper-right corner of Figure 2?
Ent...
Lecture- Tutorials for Introductory Astronomy
Give the metric symbol, or abbreviation, for each prefix.
13. mega
Applied Physics (11th Edition)
A force F Facts in the x-direction, its magnitude given by F = ax2where x is in meters and a = 5.0 N/m2. Find t...
Essential University Physics: Volume 1 (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- How diesel generators work?! And there benefits?!arrow_forwardIf you could use any source of energy for heating your food, which one would you use and why?arrow_forwardBased on the following equation what is the heat of formation, AHf", for H2O(1) * 2 H,(g) + O,(g) → 2 H,0(1) + 136.6 kcal -68.3 kcal +68.3 kcal -136.6 kcal +136.6 kcal The thermochemical reaction for the decomposition of nitrogen dioxide is shown below. What is the heat of formation, AHF°, of nitrogen dioxide, NO2(g) * 2 NO,(g) -IN,(g) + 2 O,(g) + 16.2 kcal -16.2 kcal O +16.2 kcal O +8.1 kcal O -8.1 kcalarrow_forward
- (a) Construct a table showing the macrostates and all of the individual microstates for tossing 6 coins. (b) How many macrostates are there? (c) What is the total number of microstates? (d) What percent chance is there of tossing 5 heads and 1 tail? (e) How much more likely are you to toss 3 heads and 3 tails than 5 heads and 1 tail?(Take the ratio of the number of microstates to find out.)arrow_forwardWhich scenario is an example of a negative feedback loop? When body temperature increases, sweat is produced as a cooling agent to lower body temperature. When body temperature increases, sweat is produced as a cooling agent to lower body temperature. In some parts of the world, birth rates are far exceeding death rates, which has led to overpopulation. In some parts of the world, birth rates are far exceeding death rates, which has led to overpopulation. Ice reflects sunlight much better than water. A warmer atmosphere is turning ice to water, which is absorbing more of the Sun’s energy. Ice reflects sunlight much better than water. A warmer atmosphere is turning ice to water, which is absorbing more of the Sun’s energy. A warmer atmosphere is leading to warmer oceans. A warm ocean releases more carbon dioxide, which traps more heat in Earth’s atmosphere. A warmer atmosphere is leading to warmer oceans. A warm ocean releases more carbon dioxide, which traps…arrow_forward1) Suppose that the initial number of bacteria in a culture is 200, and that there are 700 bacteria present after 2 days. How long would it take for the number of bacteria to reach 4000? 2) A bowl of soup originally at 140 F is sitting in a 70 F room. After 10 minutes, the soup has cooled to 120 F. How long will it take for the soup to cool to 90 F?arrow_forward
- When we use petrol we are ultimately using stored energy from the sun. Plants capture the energy when growing, and then through a long process of decay and compression this plant matter is converted into a fossil fuel. An interesting question is how much sunlight is needed to produce a quantity of petrol. To estimate this, let's assume the petrol has come from wood, and let's assume we have a fast-growing wood source such as Pinus radiata. Assume also: a mature tree contains around 3 m3 of timber; a tree is harvested when 35 years old; the density of wood is around 500 kg/m3; 2 kg of wood makes 1L of petrol; a tree receives on average 8 hours of sunlight per day. How many "hours of sunlight" are stored in 1L of petrol? i.e. how many hours of sunlight does a tree need to be exposed to, to produce the amount of wood needed to make 1 L of petrol? Give your answer to two significant figures.arrow_forwardHow do photovoltaic cells generate electricity?arrow_forwardWhat are the benefits of hydrogen as a fuel?arrow_forward
- You discovered a group of people living in a primitive village that is far from civilization. There are about 40 people living in 12 huts. Their primary source of food is from hunting beasts in the forest, fishing in the river, and farming different crops. During summer, they wear thin clothes to minimize the heat in their bodies. They do not have air conditioning systems or fans that could cool them on such hot days but they usually stay under the trees or near the river where there is plenty of fresh air. At night, they light a campfire to provide heat and to give a little brightness during the dark. Supposing you have with you motors, generators, and transformers (the types are up to you), how would you use them to improve the quality of life of the people in the village?arrow_forward(a) A commercial 737 jet transporting 143 passengersand 5 crew members from Kansas City (MCI) to Baltimore (BWI) burned 11,800 lb (about 1700 gallons)of Jet A fuel en route. Jet A fuel is kerosine based,consisting primarily of CnH2n+2 hydrocarbons, withn: 5 6 to 16, so the carbonhydrogen ratio is close to12. During this flight, how much CO2 was releasedinto the atmosphere? Assume the combustion of thefuel was complete, so all the fuel was burned to formCO2 and H2O. Give both the mass of CO2 produced(in kg and in lbs) and the volume it would occupy at298 K, 1 atm.(b) How much CO2 would be released into the atmosphere if those passengers and crew made the tripinstead, in pairs, in hybrid cars at 40 miles per gallon.Assume the density of the gasoline is 0.75 kg L21andthat carbon and hydrogen dominate the compositionin a ratio of 1:2. The road trip is 1082 miles.arrow_forwardHydrogen sulfide is an impurity in natural gas that must beremoved. One common removal method is called the Clausprocess, which relies on the reaction:8 H2S1g2 + 4 O21g2¡S81l2 + 8 H2O1g2Under optimal conditions the Claus process gives 98% yield of S8from H2S. If you started with 30.0 g of H2S and 50.0 g of O2, howmany grams of S8 would be produced, assuming 98% yield?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY