EBK INTRO.CHEMISTRY (NASTA EDITION)
9th Edition
ISBN: 9781337678032
Author: ZUMDAHL
Publisher: CENGAGE CO
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Chapter 6, Problem 35QAP
When balancing chemical equations, beginning students are often tempted to change the numbers within a formula (the subscripts) to balance the equation. Why is this never permitted? What effect does changing a subscript have?
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Chapter 6 Solutions
EBK INTRO.CHEMISTRY (NASTA EDITION)
Ch. 6.2 - Prob. 6.1SCCh. 6.3 - Prob. 1CTCh. 6.3 - One part of the problem-solving strategy for...Ch. 6.3 - Prob. 6.2SCCh. 6.3 - Prob. 6.3SCCh. 6 - The following are actual student responses to the...Ch. 6 - Prob. 2ALQCh. 6 - Given the equation for the reaction:N2+H2NH3 ,...Ch. 6 - Prob. 4ALQCh. 6 - Can the subscripts in a chemical formula be...
Ch. 6 - Prob. 6ALQCh. 6 - Changing the subscripts of chemicals can...Ch. 6 - Table 6.1 lists some clues that a chemical...Ch. 6 - Use molecular-level drawings to show the...Ch. 6 - It is stated in Section 6.3 of the text that to...Ch. 6 - Prob. 11ALQCh. 6 - Consider the generic chemical equationaA+bBcC+dD...Ch. 6 - Prob. 13ALQCh. 6 - Which of the following correctly describes the...Ch. 6 - Which of the following correctly balances the...Ch. 6 - The reaction of an element X() with element Y() is...Ch. 6 - Prob. 1QAPCh. 6 - Prob. 2QAPCh. 6 - Although these days many people have...Ch. 6 - Prob. 4QAPCh. 6 - You have probably had the unpleasant experience of...Ch. 6 - If you’ve ever left bread in a toaster too long,...Ch. 6 - What are the substances to theleftof the arrow in...Ch. 6 - Prob. 8QAPCh. 6 - In a chemical reaction, the total number of atoms...Ch. 6 - Prob. 10QAPCh. 6 - Prob. 11QAPCh. 6 - The notation “(l)” after a substance’s formula...Ch. 6 - A common experiment to determine the relative...Ch. 6 - A common lecture demonstration called “elephant’s...Ch. 6 - If a sample of pure hydrogen gas is ignited very...Ch. 6 - Liquid hydrazine, has been used as a fuel for...Ch. 6 - If electricity of sufficient voltage is passed...Ch. 6 - Silver oxide may be decomposed by strong heating...Ch. 6 - Elemental boron is produced in one industrial...Ch. 6 - Many over-the-counter antacid tablets are now...Ch. 6 - Phosphorus trichloride is used in the manufacture...Ch. 6 - Pure silicon, which is needed in the manufacturing...Ch. 6 - Nitrous oxide gas (systematic name: dinitrogen...Ch. 6 - Solid zinc is added to an aqueous solution...Ch. 6 - Acetylene gas (C2H2) is often used by plumbers,...Ch. 6 - The burning of high-sulfur fuels has been shown to...Ch. 6 - The Group 2 metals (Ba, Ca, Sr) can be produced in...Ch. 6 - There are fears that the protective ozone layer...Ch. 6 - Carbon tetrachloride was widely used for many...Ch. 6 - When elemental phosphorus, P4, burns in oxygen...Ch. 6 - Calcium oxide is sometimes very challenging to...Ch. 6 - Prob. 32QAPCh. 6 - The element tin often occurs in nature as the...Ch. 6 - Nitric acid, HNO3 , can be produced by reacting...Ch. 6 - When balancing chemical equations, beginning...Ch. 6 - The “Chemistry in Focus” segment The Beetle That...Ch. 6 - Balance each of the following chemical equations....Ch. 6 - Balance the equations for the reaction of...Ch. 6 - Balance each of the following chemical equations....Ch. 6 - Balance each of the following chemical equations....Ch. 6 - Balance each of the following chemical equations....Ch. 6 - Prob. 42QAPCh. 6 - Prob. 43QAPCh. 6 - Prob. 44QAPCh. 6 - Acetylene gas, C2H2 , is used in welding because...Ch. 6 - When balancing a chemical equation, which of the...Ch. 6 - Crude gunpowders often contain a mixture of...Ch. 6 - The following demonstration takes place in a...Ch. 6 - Methanol (methyl alcohol), CH3OH , is a very...Ch. 6 - The Hall process is an important method by which...Ch. 6 - Iron oxide ores, commonly a mixture of FeO and...Ch. 6 - True or false? Coefficients can be fractions when...Ch. 6 - When steel wool (iron) is heated in pure oxygen...Ch. 6 - One method of producing hydrogen peroxide is to...Ch. 6 - When elemental boron, B, is burned in oxygen gas,...Ch. 6 - A common experiment in introductory chemistry...Ch. 6 - A common demonstration in chemistry courses...Ch. 6 - Write a balanced chemical equation for the...Ch. 6 - Prob. 59APCh. 6 - Prob. 60APCh. 6 - If you had a “sour stomach,” you might try an...Ch. 6 - When iron wire is heated in the presence of...Ch. 6 - When finely divided solid sodium is dropped into a...Ch. 6 - If aqueous solutions of potassium chromate and...Ch. 6 - When hydrogen sulfide, H2S , gas is bubbled...Ch. 6 - If an electric current is passed through aqueous...Ch. 6 - When a strip of magnesium metal is heated in...Ch. 6 - Prob. 68APCh. 6 - When solid red phosphorus, is burned in air, the...Ch. 6 - When copper (II) oxide is boiled in an aqueous...Ch. 6 - When lead(II) sulfide is heated lo high...Ch. 6 - Which of the following statements about chemical...Ch. 6 - Prob. 73APCh. 6 - Prob. 74APCh. 6 - Prob. 75APCh. 6 - Using different shapes to distinguish between...Ch. 6 - Which of the following statements about chemical...Ch. 6 - Prob. 78CPCh. 6 - Balance the following chemical equations....
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- When balancing a chemical equation, which of the following statements is false? l type='a'> Subscripts in the reactants must be conserved in the products. i>Coefficients are used to balance the atoms on both sides. i>The law of conservation of matter must he followed. i>Phases are often shown for each compound hut are not critical to balancing an equation.arrow_forwardMany over-the-counter antacid tablets are now formulated using calcium carbonate as the active ingredient, which enables such tablets to also be used as dietary calcium supplements. As an antacid for gastric hyperacidity, calcium carbonate reacts by combining with hydrochloric acid found in the stomach, producing a solution of calcium chloride, converting the stomach acid to water, and releasing carbon dioxide gas (which the person suffering from stomach problems may feel as a “burp”). Write the unbalanced chemical equation for this process.arrow_forwardList and define all the ways of classifying chemical reactions that have been discussed in the text. Give a balanced chemical equation as an example of each type of reaction, and show clearly how your example fits the definition you have given.arrow_forward
- It is stated in Section 6.3 of the text that to balance equations by inspection you start “with the most complicated molecule.” What does this mean? Why is it best to do this?arrow_forwardWhat is the difference between a solute and a solvent?arrow_forwardThe flasks below illustrated three trials of a reaction between varying amounts of zinc and a constant volume of hydrochloric acid solution of constant concentration. The table gives the initial amount of zinc added and the observation at the conclusion of each reaction. Mass of Zinc Added g Observation at Conclusion of Reaction 6.10 Balloon inflated completely Some unreacted zinc remains 2.37 Balloon inflated completely No zinc remains 0.41 Balloon not inflated completely No zinc remains The reaction produces an aqueous solution of zinc chloride and hydrogen gas. Explain the observed results.arrow_forward
- When steel wool (iron) is heated in pure oxygen gas, the steel wool bursts into flame and a fine powder consisting of a mixture of iron oxides ( FeO and Fe2O3 ) forms. Write separate unbalanced equations for the reaction of iron with oxygen to give each of these products.arrow_forwardTrue or false? Coefficients can be fractions when balancing a chemical equation. Whether true or false, explain why this can or cannot occur.arrow_forwardUsing the general solubility rules discussed in Chapter 7, give the formulas of live substances that would be expected to be readily soluble in water and five substances that would be expected to not be very soluble in water. For each of the substances you choose, indicate the specific solubility rule you applied to make your prediction.arrow_forward
- Polychlorinated biphenyls (PCBs) have been used extensively as dielectric materials in electrical transformers. Because PCBs have been shown to be potentially harmful, analysis for their presence in the environment has become very important. PCBs are manufactured according to the following generic reaction: C12H10+nCl2C12H10nCln.+nHCl This reaction results in a mixture of PCB products. The mixture is analyzed by decomposing the PCBs and then precipitating the resulting Cl asAgCl. a. Develop a general equation that relates the average value of n to the mass of a given mixture of PCBs and the mass of AgCl produced. b. A 0.1947-g sample of a commercial PCB yielded 0.4791 g of AgCl. What is the average value of n for this sample?arrow_forwardAlthough these days many people have “self-cleaning” ovens, if your oven getsreallydirty you may have to resort to one of the spray-on oven cleaner preparations sold in supermarkets. What evidence is there that such oven cleaners work by a chemical reaction?arrow_forwardExplain how an equation can be balanced even if the number of reactant particles differs from the number of product particles.arrow_forward
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