Problem 1RCC Problem 2RCC Problem 3RCC Problem 4RCC: If it takes 436 kilojoules to break a bond, how many kilojoules are released when the same bond is... Problem 5RCC: What is released by an exothermic reaction? Problem 6RCC: What is absorbed by an endothermic reaction? Problem 7RCC Problem 8RCC: What generally happens to the rate of a chemical reaction with increasing temperature? Problem 9RCC: Which reactant molecules are the first to pass over the energy barrier? Problem 10RCC: How is an acid different from a base? Problem 11RCC: When an acid is dissolved in water, what ion does the water form? Problem 12RCC Problem 13RCC: Are there many hydronium ions in neutral water? Problem 14RCC: What is true about the relative concentrations of hydronium and hydroxide ions in an acidic... Problem 15RCC: What does the pH of a solution indicate? Problem 16RCC Problem 17RCC: What elements have the greatest tendency to behave as reducing agents? Problem 18RCC: What happens to a reducing agent as it reduces? Problem 19RCC: What metal coats a galvanized nail? Problem 20RCC: What is iron forced to accept during cathodic protection? Problem 21RCC: What happens to the polarity of oxygen atoms as they transform from molecular oxygen, O2, into water... Problem 22TIS: What catalyst is effective in the destruction of atmospheric ozone, O3? Problem 23TIS Problem 24TIS: What net effect does a chemical reaction have on a catalyst? Problem 25TIS: What is the product of the reaction between carbon dioxide and water? Problem 26TIS Problem 27TIS Problem 28TIS: A material that tends to lose electrons is put into contact with a material that tends to gain... Problem 29TIS: What is the primary difference between a battery and a fuel cell? Problem 30TIS Problem 39TC: Rank these reaction profiles in order of increasing reaction speed: a bc Problem 40TC: Rank the covalent bonds in order of increasing bond strength: a CC, b C=C, c CC. Problem 41TC: Review the concept of electronegativity in Section 12.4 and rank the elements from the weakest to... Problem 42TC: Review the concept of electronegativity in Section 12.4 and rank the elements from the weakest to... Problem 43TC: Rank these molecules from least oxidized to most oxidized. a Ethaneb Ethanolc Acetaldehyded Acetic... Problem 44TS Problem 45TS Problem 46TS: When the hydronium ion concentration of a solution is 11010M, what is the pH of the solution? Is the... Problem 47TS: When the pH of a solution is 1, the concentration of hydronium ions is 101M=0.1M. Assume that the... Problem 48TS: Show that the pH of a solution is 0.301 when its hydronium ion concentration equals 2 moles per... Problem 49TS: Show that the hydroxide ion concentration of a solution is 103M when the pH is 11. Is this solution... Problem 50TE: How can 50g of wood burn to produce more than 50g of products? Problem 51TE: Balance these equations: a Fe(s)+O2(g)Fe2O3(s) b H2(g)+N2(g)NH3(g) c Cl2(g)+KBr(aq)Br2(l)+KCl(aq) d... Problem 52TE: Balance these equations: a Fe(s)+S(s)Fe2S3(s) b P4(s)+H2(g)PH3(g) C NO(g)+Cl2(g)NOCl(g) d... Problem 53TE Problem 54TE: Use the following illustration to answer exercises 54-56. Assume the illustrations above are two... Problem 55TE: Use the following illustration to answer exercises 54-56. There is an excess of at least one of the... Problem 57TE: What changes during a chemical reaction? Problem 58TE Problem 59TE: Is photosynthesis an exothermic or endothermic process? Please explain. Problem 60TE: Why does blowing into a campfire make the fire burn brighter? Problem 61TE: In the laboratory, endothermic reactions are usually performed at elevated temperatures, while... Problem 62TE Problem 63TE: Why does a glowing splint of wood burn only slowly in air but burst into flames when placed in pure... Problem 64TE Problem 65TE: Chew a salt-free soda cracker for a few minutes and the cracker begins to taste sweet. Why? Problem 66TE Problem 67TE: Does the ozone pollution from automobiles help alleviate an ozone hole over the South Pole? Defend... Problem 68TE: Chlorine is put into the atmosphere by volcanoes in the form of hydrogen chloride, HCl, but this... Problem 69TE Problem 70TE Problem 71TE: An acid and a base react to form salt, which consists of positive and negative ions. Which forms the... Problem 72TE: Identify the acid or base behavior of each substance in these reactions: a H3O+_+Cl_H2O_+HCl_ b... Problem 73TE Problem 74TE Problem 75TE: The main component of bleach is sodium hypochlorite, NaOCl, which consists of sodium ions, Na+, and... Problem 76TE Problem 77TE Problem 78TE: Within a neutral solution of supercritical water 374C, 218atm, the pH equals about 2. What is the... Problem 79TE: What is the concentration of hydronium ions in a solution that has a pH of 3? Why is such a solution... Problem 80TE: Can an acidic solution be made less acidic by adding an acidic solution? Problem 81TE: How does burning fossil fuels lower the pH of the ocean? Problem 82TE: Bubbling carbon dioxide into water causes the pH of the water to go down become more acidic because... Problem 83TE: Pour vinegar onto beach sand from the Caribbean, and the result is a lot of froth and bubbles. Pour... Problem 84TE: What happens to the pH of soda water as it loses its carbonation? Problem 85TE Problem 86TE Problem 87TE: Why is the chlorine atom such a strong oxidizing agent? Problem 88TE Problem 89TE: What element behaves as the oxidizing agent in the following equation, and what element behaves as... Problem 90TE: Hydrogen sulfide, H2S, burns in the presence of oxygen, O2, to produce water, H2O, and sulfur... Problem 91TE: Unsaturated fatty acids, such as C12H22O2, react with hydrogen gas, H2, to form saturated fatty... Problem 92TE: The type of iron that the human body needs for good health is the Fe2+ ion. Cereals fortified with... Problem 93TE: Why is lithium a preferred metal for the making of batteries? Problem 94TE: Chemical equations must be balanced not only in terms of the number of atoms but also by the charge.... Problem 95TE: Study question 94 before attempting to balance both the atoms and charges of the following chemical... Problem 96TE: How does turning on the radio while you are driving affect the mileage of your gasoline- consuming... Problem 97TE: What are some key advantages that a fuel-cell power plant has over a coal-fired power plant? Problem 98TE: Do our bodies gradually oxidize or reduce the food molecules we eat? Problem 99TE: Pennies manufactured after 1982 are made of zinc metal, Zn, within a coat of copper metal, Cu. Zinc... Problem 100TE: Water is 88.88 oxygen by mass. Oxygen is exactly what a fire needs to grow brighter and stronger.... Problem 101TE: Why is the air over an open flame always moist? Problem 102TE: Upon ingestion, grain alcohol, C2H6O, is metabolized into acetaldehyde, C2H4O, which is a toxic... Problem 103TDI Problem 104TDI: Can industries be trusted to self-regulate the amount of pollution they produce? Is government... Problem 105TDI: In the centralized model for generating electricity, a relatively small number of power plants... Problem 1RAT Problem 2RAT Problem 3RAT: How much energy, in kilojoules, is released or absorbed from the reaction of 1 mole of nitrogen, N2,... Problem 4RAT: The yeast in bread dough feeds on sugar to produce carbon dioxide. Why does the dough rise faster in... Problem 5RAT: What role do CFCs play in the catalytic destruction of ozone? a Ozone is destroyed upon binding to a... Problem 6RAT: What is the relationship between the hydroxide ion and a water molecule? a A hydroxide ion is a... Problem 7RAT: When the hydronium ion concentration equals 1 mole per liter, what is the pH of the solution? Is the... Problem 8RAT Problem 9RAT: Why does a battery that has thick zinc walls last longer than a battery that has thin zinc walls? a... Problem 10RAT: What element is oxidized in this equation and what element is reduced? Sn2++2AgSn+2Ag+ a The tin... format_list_bulleted
An Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning
Modern PhysicsPhysicsISBN:9781111794378Author:Raymond A. Serway, Clement J. Moses, Curt A. MoyerPublisher:Cengage Learning