12 - Refer to Exercise 9. (12.3), Ch. 12.1 - Why is Antoine Lavoisier called The Father of... Ch. 12.5 - Dilute solutions of hydrogen peroxide, H2O2, are... Ch. What causes a storm surge? It is among one of the most commonly manufactured and utilized industrial chemicals today although, it is also naturally occurring in animals, plants and also is a part of the nitrogen cycle (bacterial processing). Ch. Question =  Is C4H10 polar or  nonpolar   ? 12 - Sodium reacts with a certain element to form a... Ch. Propose a synthesis for the systemic agricultural fungicide tridemorph from dodecanoic acid (lauric acid), prop... a What main difference between gases and liquids at the particulate level accounts for the large differences in... Ch. Answer =  CF2Cl2  (Dichlorodifluoromethane)  is  Polar What is polar and non-polar? Answer =  CLO3-  (Chlorate)  is  Polar What is polar and non-polar? 12 - An atom that has gained an electron is called a(n)... Ch. 12 - State the octet rule. The following beakers are illustrations of the contents of the beaker at various... Give the structures of the possible Claisen condensation products from the following reactions. Oxygen consists of three different _____, each having eight protons but different numbers of neutrons. Question = Is NH3 polar or nonpolar ? Polar "In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole or multipole moment. Consider a 2.0-L aqueous solution of 4.17 M NH3, where 21.0 g of NH4Cl are dissolved. 12 - State the short general principle of solubility,... Ch. Answers to all problems are at the end of this book. Ch. 12 - Calculate (to the nearest 0.1 u) the formula mass... Ch. 1-53 Which states of matter have a definite vo1ume? (12.4). 12.4 - In forming compounds, how many electrons do atoms... Ch. 12 - Use your knowledge of the correct number of... Ch. 12 - Briefly, how are covalent compounds formed? 12 - Refer to Exercise 10. 12.1 - If 111.1 g of calcium chloride is formed when 40.1... Ch. 12 - Why cant we destroy bothersome pollutants by just... Ch. Think of an example of an open system, and outline some of the matterenergy inputs and outputs involved in such... Verify that the atomic weight of magnesium is 24.31, given the following information: 24Mg, mass = 23.985042 u;... On a pound-for-pound basis, a 5-year-old s need for vitamin A is about double the need of an adult man. Answer =  C2Cl4 (  Tetrachloroethylene )   is nonPolar What is polar and non-polar? NH3 is the chemical name or rather the chemical formula for Ammonia, where N stands for Nitrogen and H stands for Hydrogen. 12 - When you use a bottle of vinegar-and-oil salad... Ch. Answer the following questions based on the given electron configurations and identify the elements. What about... Ch. The ammonia molecule has a trigonal pyramidal shape with the three hydrogen atoms and an unshared pair of electrons attached to the nitrogen atom. Polar molecules must contain polar bonds due to a difference in electronegativity between the bonded atoms. In the... Ch. a. fishes b. amphibians c. birds d. mammals. Answer =  C4H10 (  BUTANE )   is Polar What is polar and non-polar? 12 - Dry ice has the chemical formula ___. 12 - Referring only to a periodic table, give the ionic... Ch. It is a common nitrogenous waste, particularly among aquatic organisms, and it contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to food and fertilizers. Which of the following are called the resistance vessels? It is a polar molecule and is highly associated because of strong intermolecular hydrogen bonding. Answer = NH3 ( ammonia ) is Polar What is polar and non-polar? 12.2 - Find the formula mass of hydrogen sulfide, H2S,... Ch. Question =  Is ICl3 polar or  nonpolar  ? Ammonia is polar because it has a lone pair of electrons. Answer =  TeCl4 (  Tellurium tetrachloride )   is Polar What is polar and non-polar? a. b. c. HCOOH. If the lone pair of valence electrons were not there, the opposite charges of the two types of atoms would cancel each other out; but it cannot be so as they ARE there. Polar molecules must contain polar bonds due to a difference in electronegativity between the bonded atoms. 12 - Manganese reacts with a certain element (X) to... Ch. 12 - Your friend has glasses with photochromic lenses;... Ch. Assume it takes 7.00 minutes to fill a 30.0-gal gasoline tank. 12 - You are the supervisor in a car assembly plant... Ch. 12.4 - In the nine blank spaces in the matrix below,... Ch. To answer this, one might take the example of the bonding between a fluorine atom and a carbon atom. While there are other uses of ammonia, most (about 80%) of the industrially manufactured ammonia is used for fertilization purposes. C. Venules Fish and other aquatic animals dispel ammonia directly, while terrestrial animal often convert it to urea and other, less-toxic forms. Detailed solutions are available in the Student Solutions ... 3.77 Answer each of the following questions. A molecule may be nonpolar either when there is an equal sharing of electrons between the two atoms of a diatomic molecule or because of the symmetrical arrangement of polar bonds in a more complex molecule. 12 - A sample of compound AB decomposes to 48 g of A... Ch. 12 - The density of a solid substance is usually... Ch. Find an example of something in nature that you think could be mimicked for som... Sphingomyelins are important components in the coating that surrounds what body component? 12 - The highly electronegative atoms that are involved... Ch. 12 - Predict the formula for each ionic compound.... Ch. 12 - A formula unit of potassium sulfide (K2S) would... Ch. Because ammonia is a polar molecule, it can be dissolved by water. Assume it takes 7.00 minutes to fill a 30.0-gal gasoline tank. 12.2 - Find the percent mass of aluminum and oxygen in... Ch. Due to its strong alkaline nature, ammonia is used both in industrial as well as in household cleaners. Explain why monitoring blood lactate levels might be a useful technique to gauge the amount of conditioning in ... 21. 12 - State the law of conservation of mass, and give an... Ch. 12 - Which of these three forces is responsible for... Ch. 12.6 - What does the phrase like dissolves like mean? Why is the following situation impossible? Ammonia, while used as cleaner, is found in nature as a waste product. and some have just too many (like the alkali metals and the alkaline earth metals). Ammonia is also an important component while making explosives, other chemicals, colors and even pesticides. Other uses of ammonia include its applications as a refrigerant and water purifying agent. 12 - Draw the Lewis structure for the rocket fuel... Ch. 12 - KEY TERMS 1. law of conservation of mass (12.1) 2.... Ch. P10.9) accelerates a discus from rest to a speed of 25.0 m/s by whirling it through 1.25... What evidence can you give that disks of gas and dust are common around young stars? Ch. 12.2 - What is the sum of the atomic masses given in the... Ch. 12 - Predict which of these compounds are ionic and... Ch. 12 - In a lab experiment, 7.75 g of phosphorus reacts... Ch. 12 - Which of the following statements comparing the... Ch. 12 - Electronegativity increases across a period and... Ch. a. Ammonia is polar. 12.3 - Which two laws did Daltons hypotheses explain? 12 - Which element in the periodic table has the... Ch. 12 - What do we mean when we say that F , Ne, and Na+... Ch. Explain how the number of valence electrons of an atom is related to its chemical properties. The loa... (Indicates a review question, which means it requires only a basic understanding of the material to answer. Question =  Is C2Cl4 polar or  nonpolar   ? Some people choose to abstain from drinking alcoholic beverages. 12 - When 4.37 g of aluminum are heated in air, 9.59 g... Ch. *Response times vary by subject and question complexity. 12 - What is the difference between a Lewis symbol and... Ch. *Response times vary by subject and question complexity. 12 - The total ___ before and after a reaction must be... Ch.