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How can a nucleus emit an electron during β decay when there are no electrons present in the nucleus to begin with?
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Ch.11 Nuclear Chemistry
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 11, Problema 29
What is wrong with the following decay curve? Explain. 
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Identify the type of decay process represented by the curve. Typically, decay curves are exponential, representing processes like radioactive decay or first-order chemical reactions.
Observe the shape of the curve. In a typical exponential decay, the curve should approach zero asymptotically, meaning it never actually reaches zero but gets infinitely close.
Check the y-axis values. The graph shows the sample remaining in grams per 100 grams of the sample. In a proper decay curve, the values should decrease continuously and never become negative.
Analyze the x-axis values. The time should be consistent with the half-life or decay constant of the substance, showing a consistent rate of decay over time.
Evaluate the end behavior of the curve. The curve should not flatten out completely if it represents a true decay process, as this would imply the sample stops decaying, which is not typical for exponential decay.
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Radioactive Decay
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation. This decay occurs at a predictable rate, characterized by the half-life, which is the time required for half of the radioactive sample to decay. Understanding this concept is crucial for analyzing decay curves, as they typically exhibit an exponential decrease in the quantity of the sample over time.
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02:52
Measuring Radioactivity Concept 1
Decay Curve
A decay curve graphically represents the amount of a radioactive substance remaining over time. It typically shows a steep decline initially, which gradually levels off as the sample approaches stability. Analyzing the shape and behavior of the curve helps identify inconsistencies or errors in the data, such as deviations from expected exponential decay patterns.
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05:54Heating and Cooling Curves Concept 2
Exponential Decay
Exponential decay describes a process where the quantity decreases at a rate proportional to its current value. In the context of radioactive decay, this means that the sample's remaining amount decreases rapidly at first and then slows down over time. A proper decay curve should reflect this behavior; any linear or non-exponential trends may indicate errors in measurement or interpretation.
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01:02Characteristics of Beta Particles Example
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