CONCEPTUAL INTEGRATED SCIENCE (PEARSON+
3rd Edition
ISBN: 2818440059223
Author: Hewitt
Publisher: PEARSON+
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Chapter 13, Problem 97TE
What are some key advantages that a fuel-cell power plant has over a coal-fired
power plant?
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The nearby town of Bellefonte, PA features the Gamble Mill, an old mill originally used to grind grain into flour - 1800s hydropower. The mill dam, pond, millrace and tail race are still in place and functional. The mill building is now a restaurant (currently for sale), but all the water-works are owned by the borough. The municipal manager wants to put the system back to work as a small hydroelectric system to help supply the borough's electricity. Does this idea make sense? How much power could this system produce?
The height difference between the mill race and the tailrace is ten feet (3 meters), and the stream can supply, on average, 100 cubic feet of water per second (2.8 m^3 / sec). The planned turbine would be 66% efficient under those conditions. Power (watts) = density of water * height * flow rate * acceleration of gravity * coefficient of efficiency
NOTE: the coefficient of gravity is 9.81 for this problem
The nearby town of Bellefonte, PA features the Gamble Mill, an old mill originally used to grind grain into flour in the 1800s for hydropower. The mill dam, pond, mill race and tail race are still in place and functional. The mill building is now a restaurant (currently for sale), but all the water works are owned by the borough. The municipal manager wants to put the system back to work as a small hydroelectric system to help supply the borough's electricity. Does this idea make sense? How much power could this system produce? The height difference between the mill race and the tail race is ten feet (3 meters), and the stream can supply, on average, 100 cubic feet of water per second (2.8 m3/sec). The planned turbine would be 72% efficient under those conditions. Power (watts) density of water* height flow rate acceleration of gravity coefficient of efficiency NOTE: the coefficient of gravity is 9.81 for this problem Don't round your answers.
Estimate the annual carbon footprint (in lbs) of 1000 W Freezer operated 24 hours a day(assume 1 gal of crude oil generates 30 KWh and produces 40 lbs of CO2?
Chapter 13 Solutions
CONCEPTUAL INTEGRATED SCIENCE (PEARSON+
Ch. 13 - Prob. 1RCCCh. 13 - Prob. 2RCCCh. 13 - Prob. 3RCCCh. 13 - If it takes 436 kilojoules to break a bond, how...Ch. 13 - What is released by an exothermic reaction?Ch. 13 - What is absorbed by an endothermic reaction?Ch. 13 - Prob. 7RCCCh. 13 - What generally happens to the rate of a chemical...Ch. 13 - Which reactant molecules are the first to pass...Ch. 13 - How is an acid different from a base?
Ch. 13 - When an acid is dissolved in water, what ion does...Ch. 13 - Prob. 12RCCCh. 13 - Are there many hydronium ions in neutral water?Ch. 13 - What is true about the relative concentrations of...Ch. 13 - What does the pH of a solution indicate?Ch. 13 - Prob. 16RCCCh. 13 - What elements have the greatest tendency to behave...Ch. 13 - What happens to a reducing agent as it reduces?Ch. 13 - What metal coats a galvanized nail?Ch. 13 - What is iron forced to accept during cathodic...Ch. 13 - What happens to the polarity of oxygen atoms as...Ch. 13 - What catalyst is effective in the destruction of...Ch. 13 - Prob. 23TISCh. 13 - What net effect does a chemical reaction have on a...Ch. 13 - What is the product of the reaction between carbon...Ch. 13 - Prob. 26TISCh. 13 - Prob. 27TISCh. 13 - A material that tends to lose electrons is put...Ch. 13 - What is the primary difference between a battery...Ch. 13 - Prob. 30TISCh. 13 - Rank these reaction profiles in order of...Ch. 13 - Rank the covalent bonds in order of increasing...Ch. 13 - Review the concept of electronegativity in Section...Ch. 13 - Review the concept of electronegativity in Section...Ch. 13 - Rank these molecules from least oxidized to most...Ch. 13 - Prob. 44TSCh. 13 - Prob. 45TSCh. 13 - When the hydronium ion concentration of a solution...Ch. 13 - When the pH of a solution is 1, the concentration...Ch. 13 - Show that the pH of a solution is 0.301 when its...Ch. 13 - Show that the hydroxide ion concentration of a...Ch. 13 - How can 50g of wood burn to produce more than 50g...Ch. 13 - Balance these equations: a Fe(s)+O2(g)Fe2O3(s) b...Ch. 13 - Balance these equations: a Fe(s)+S(s)Fe2S3(s) b...Ch. 13 - Prob. 53TECh. 13 - Use the following illustration to answer exercises...Ch. 13 - Use the following illustration to answer exercises...Ch. 13 - What changes during a chemical reaction?Ch. 13 - Prob. 58TECh. 13 - Is photosynthesis an exothermic or endothermic...Ch. 13 - Why does blowing into a campfire make the fire...Ch. 13 - In the laboratory, endothermic reactions are...Ch. 13 - Prob. 62TECh. 13 - Why does a glowing splint of wood burn only slowly...Ch. 13 - Prob. 64TECh. 13 - Chew a salt-free soda cracker for a few minutes...Ch. 13 - Prob. 66TECh. 13 - Does the ozone pollution from automobiles help...Ch. 13 - Chlorine is put into the atmosphere by volcanoes...Ch. 13 - Prob. 69TECh. 13 - Prob. 70TECh. 13 - An acid and a base react to form salt, which...Ch. 13 - Identify the acid or base behavior of each...Ch. 13 - Prob. 73TECh. 13 - Prob. 74TECh. 13 - The main component of bleach is sodium...Ch. 13 - Prob. 76TECh. 13 - Prob. 77TECh. 13 - Within a neutral solution of supercritical water...Ch. 13 - What is the concentration of hydronium ions in a...Ch. 13 - Can an acidic solution be made less acidic by...Ch. 13 - How does burning fossil fuels lower the pH of the...Ch. 13 - Bubbling carbon dioxide into water causes the pH...Ch. 13 - Pour vinegar onto beach sand from the Caribbean,...Ch. 13 - What happens to the pH of soda water as it loses...Ch. 13 - Prob. 85TECh. 13 - Prob. 86TECh. 13 - Why is the chlorine atom such a strong oxidizing...Ch. 13 - Prob. 88TECh. 13 - What element behaves as the oxidizing agent in the...Ch. 13 - Hydrogen sulfide, H2S, burns in the presence of...Ch. 13 - Unsaturated fatty acids, such as C12H22O2, react...Ch. 13 - The type of iron that the human body needs for...Ch. 13 - Why is lithium a preferred metal for the making of...Ch. 13 - Chemical equations must be balanced not only in...Ch. 13 - Study question 94 before attempting to balance...Ch. 13 - How does turning on the radio while you are...Ch. 13 - What are some key advantages that a fuel-cell...Ch. 13 - Do our bodies gradually oxidize or reduce the food...Ch. 13 - Pennies manufactured after 1982 are made of zinc...Ch. 13 - Water is 88.88 oxygen by mass. Oxygen is exactly...Ch. 13 - Why is the air over an open flame always moist?Ch. 13 - Upon ingestion, grain alcohol, C2H6O, is...Ch. 13 - Prob. 103TDICh. 13 - Can industries be trusted to self-regulate the...Ch. 13 - In the centralized model for generating...Ch. 13 - Prob. 1RATCh. 13 - Prob. 2RATCh. 13 - How much energy, in kilojoules, is released or...Ch. 13 - The yeast in bread dough feeds on sugar to produce...Ch. 13 - What role do CFCs play in the catalytic...Ch. 13 - What is the relationship between the hydroxide ion...Ch. 13 - When the hydronium ion concentration equals 1 mole...Ch. 13 - Prob. 8RATCh. 13 - Why does a battery that has thick zinc walls last...Ch. 13 - What element is oxidized in this equation and what...
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