menu
bartleby
search
close search
Hit Return to see all results
Subscribe
Sign in
Science
ChemistryChemistry: Principles and Reactions8th Edition
close solutoin list

A 15.0-mCi (millicurie) radioactive source runs for 2.63 hours. How many atoms have disintegrated?

BuyFindarrow_forward

Chemistry: Principles and Reactions

8th Edition
William L. Masterton + 1 other
Publisher: Cengage Learning
ISBN: 9781305079373

Solutions

Chapter
Section
Problem 1QAP
Problem 2QAP
Problem 3QAP
Problem 4QAP
Problem 5QAP
Problem 6QAP
Problem 7QAP
Problem 8QAP
Problem 9QAP
Problem 10QAP
Problem 11QAP
Problem 12QAP
Problem 13QAP
Problem 14QAP
Problem 15QAP
Problem 16QAP
Problem 17QAP
Problem 18QAP
Problem 19QAP
Problem 20QAP
Problem 21QAP
Problem 22QAP
Problem 23QAP
Problem 24QAP
Problem 25QAP
Problem 26QAP
Problem 27QAP
Problem 28QAP
Problem 29QAP
Problem 30QAP
Problem 31QAP
Problem 32QAP
Problem 33QAP
Problem 34QAP
Problem 35QAP
Problem 36QAP
Problem 37QAP
Problem 38QAP
Problem 39QAP
Problem 40QAP
Problem 41QAP
Problem 42QAP
Problem 43QAP
Problem 44QAP
Problem 45QAP
Problem 46QAP
Problem 47QAP
Problem 48QAP
Problem 49QAP
Problem 50QAP
Problem 51QAP
Problem 52QAP
Problem 53QAP
Problem 54QAP
Problem 55QAP
Problem 56QAP
Problem 57QAP
Problem 58QAP
Problem 59QAP
Problem 60QAP
Problem 61QAP
Problem 62QAP
Problem 63QAP
Problem 64QAP
Problem 65QAP
Problem 66QAP
Problem 67QAP
Problem 68QAP
Problem 69QAP
Problem 70QAP
Problem 71QAP
Problem 72QAP
Problem 73QAP
Problem 74QAP
Problem 75QAP
Problem 76QAP
Problem 77QAP
Problem 78QAP
Problem 79QAP
Problem 80QAP
Problem 81QAP
Problem 82QAP
BuyFindarrow_forward

Chemistry: Principles and Reactions

8th Edition
William L. Masterton + 1 other
Publisher: Cengage Learning
ISBN: 9781305079373
Chapter 18, Problem 22QAP
Textbook Problem
539 views

A 15.0-mCi (millicurie) radioactive source runs for 2.63 hours. How many atoms have disintegrated?

Interpretation Introduction

Interpretation:

The number of disintegrated atoms should be determined.

Concept introduction:

Activity is defined as the product of rate constant and number of atoms. It is also defined as the rate of decay or expresses number of atoms decays in unit time.

The mathematical expression is given by:

A = kN

Where, A = activity, k = first order rate constant and N = number of radioactive nuclei.

Activity can be expressed in following units:

1 Bq = 1 atom/s

1 Ci = 3.700 × 1010 atoms/s

Explanation of Solution

Given information:

Activity = 15.0 mCi

Time = 2.63 hrs

First convert the given value of activity in mCi to Ci.

Since, 1 Ci = 1000 mCi.

Thus, 15.0 mCi = 15.0 mCi×1 Ci1000 mCi=15.0×10−3 Ci

Now, convert the above value in atoms/s.

Activity = 15.0×10−3×3.7×1010 atoms/s

= 55.5×107 atoms/s

Convert the given value of time in hrs to second.

Since, 1 hr = 3600 s

Thus, time in second = 2.63×3600 s =9468 s

Now for calculating k:

Since, the unit of k is s-1, the formula is given by:

k=1t

Put the value of time in above expression:

k=19468 s=1

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution
arrow_back
Chapter 18,
Problem 21QAP
Chapter 18,
Problem 23QAP
arrow_forward

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 18 Solutions

Chemistry: Principles and Reactions
Show all chapter solutions
add
Ch. 18 - Which isotope in each of the following pairs...Ch. 18 - Which isotope in each of the following pairs...Ch. 18 - For each pair of elements listed, predict which...Ch. 18 - For each pair of elements listed, predict which...Ch. 18 - Smoke detectors contain a small amount of...Ch. 18 - Chromium-51, a positron emitter, is used in...Ch. 18 - Thorium-231 is the product of alpha emission. It...Ch. 18 - Uranium decays by alpha emission. Its daughter...Ch. 18 - Write balanced nuclear reactions for the...Ch. 18 - Write balanced nuclear equations for the...
Ch. 18 - Write balanced nuclear equations for (a) the alpha...Ch. 18 - Write balanced nuclear equations for (a) the loss...Ch. 18 - When californium-249 is bombarded by a small...Ch. 18 - When Bi-209 is bombarded with Ni-64, one neutron...Ch. 18 - Consider the "new" isotope 120285Z . Compare the...Ch. 18 - Follow the directions for Question 15 but compare...Ch. 18 - Write balanced nuclear equations for the...Ch. 18 - Write balanced nuclear equations for the...Ch. 18 - Balance the following equations by filling in the...Ch. 18 - Balance the following nuclear equations by filling...Ch. 18 - How long (in hours) would it take to disintegrate...Ch. 18 - A 15.0-mCi (millicurie) radioactive source runs...Ch. 18 - A scintillation counter registers emitted...Ch. 18 - A Geiger counter counts 0.070% of all the...Ch. 18 - Yttrium-87 has a rate constant of 2.6106s1 . What...Ch. 18 - Krypton-87 has a rate constant of 1.5104s1 . What...Ch. 18 - Iodine-131 is used to treat thyroid cancer. It...Ch. 18 - Copper-64 is used to study tumors of the brain. It...Ch. 18 - Lead-210 has a half-life of 20.4 years. This...Ch. 18 - Bromine-82 has a half-life of 36 hours. A sample...Ch. 18 - Fluorine-18 has a decay constant of 6.31103 min-1....Ch. 18 - Chlorine-36 decays by -emission. It has a decay...Ch. 18 - Co-60 is used extensively in radiotherapy as a...Ch. 18 - Phosphorus-32 is used in biochemical studies to...Ch. 18 - Carbon from a cypress beam obtained from the tomb...Ch. 18 - A "new" painting supposedly painted by...Ch. 18 - Planks from an old boat were found in a cave near...Ch. 18 - A sample of a wooden artifact gives 5.0...Ch. 18 - The radioactive isotope tritium, 13H , is produced...Ch. 18 - Consider the information given about tritium in...Ch. 18 - A rock from an archaeological dig was found to...Ch. 18 - A meteor has a Pb-206: U-238 mass ratio of...Ch. 18 - Plutonium-239 is used as the energy source for...Ch. 18 - Strontium-90 is a dangerous by-product of atomic...Ch. 18 - For Be-10, calculate (a) the mass defect. (b) the...Ch. 18 - For Al-28, calculate (a) the mass defect. (b) the...Ch. 18 - Which has the larger binding energy, F-19 or O-17?Ch. 18 - Which has the larger binding energy, K-40 or...Ch. 18 - Consider the fusion of B-10 with an alpha...Ch. 18 - Show by calculation which process produces more...Ch. 18 - Consider the fission reaction in which U-235 is...Ch. 18 - Pentaerythritol tetranitrate (C5H8N4O12 [PETN])...Ch. 18 - How many disintegrations per second occur in a...Ch. 18 - Iodine-131 is used in the treatment of tumors in...Ch. 18 - An explosion of ammonium nitrate releases 37.0...Ch. 18 - Smoke detectors contain small amounts of...Ch. 18 - The amount of oxygen dissolved in a sample of...Ch. 18 - A 25-mL sample of 0.050 M AgNO3 is mixed with 25...Ch. 18 - A 100.0-g sample of water containing tritium, 13H...Ch. 18 - Use the halt-lite of tritium given In Problem 59...Ch. 18 - One of the causes of the explosion at chernobyl...Ch. 18 - To measure the volume of in an animal's...Ch. 18 - Consider the fission reaction...Ch. 18 - A compound of Cr3+ and C2O42- is made by a...Ch. 18 - Radium-226 decays by alpha emission to radon-222....Ch. 18 - Polonium-210 decays to Pb-206 by alpha emission....Ch. 18 - For how many years could all the energy needs of...Ch. 18 - When a positron and an electron collide, they...Ch. 18 - Classify the following statements as true or...Ch. 18 - Explain how (a) alpha and beta radiation are...Ch. 18 - Suppose the 14C/12C ratio in plants a thousand...Ch. 18 - The following data are obtained for a radioactive...Ch. 18 - Fill in the following table:Ch. 18 - The principle behind the home smoke detector is...Ch. 18 - The cleavage of ATP (adenosine triphosphate) to...Ch. 18 - An activity of 20 picocuries (201012Ci) of...Ch. 18 - Plutonium-239 decays by the reaction...Ch. 18 - It is possible to estimate the activation energy...Ch. 18 - Consider the reaction 212H24He (a) Calculate ?E in...Ch. 18 - Carbon-14 (C-14) with a half-life of 5730 years...Ch. 18 - Uranium in water decays to form Zn2+ and Sm by...Ch. 18 - To determine the Kspvalue of Hg2I2, a solid sample...

Additional Science Textbook Solutions

Find more solutions based on key concepts
Show solutions add
At a particular temperature, K = 3.75 for the reaction SO2(g)+NO2(g)SO3(g)+NO(g) If all four gases had initial ...

Chemistry

Consider the compounds butanoic acid, pentanal, n-hexane, and 1-pentanol. The boiling points of these compounds...

Chemistry: An Atoms First Approach

A copper-colored metal is found to conduct an electric current. Can you say with certainty that it is copper? W...

Chemistry & Chemical Reactivity

13. Explain the numerical relationships inherent in a chemical formula.

Chemistry In Focus

Describe the nuclear model of the atom. How does this model explain the results of alpha-particle scattering fr...

General Chemistry - Standalone book (MindTap Course List)

e part of the problem-solving strategy for empirical formula determination is to base the calculation on 100 g ...

Introductory Chemistry: A Foundation

6.106 When Bohr devised his model for the atom, was he using deductive or inductive reasoning? Explain your ans...

Chemistry for Engineering Students

Case 1 The therapist achieved the goal in question 3 by increasing the patient's overall_________ and increasin...

Cardiopulmonary Anatomy & Physiology

Greg is a well-groomed boy almost three years old. He has been growing as expected, but he does not talk. He ca...

Nutrition Through The Life Cycle

1 A substance called laetrile is structurally related to carbohydrates. It has been suggested as a treatment fo...

Introduction to General, Organic and Biochemistry

What are the arguments for obtaining antioxidants from foods, supplements, or both?

Understanding Nutrition (MindTap Course List)

What are some functions of skin?

Human Biology (MindTap Course List)

What are the largest known structures in the Universe?

Horizons: Exploring the Universe (MindTap Course List)

What is biogeography, and what do biogeographers do?

Biology (MindTap Course List)

Carry out the following arithmetic operations: (a) the sum of the measured values 756, 37.2, 0.83, and 2.5; (b)...

College Physics

Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions ...

Biochemistry

KEY TERMS 1. physics (intro) 2. position (2.1) 3. motion 4. scalar (2.2) 5. vector 6. average speed 7. distance...

An Introduction to Physical Science

Sea Temperature To predict the effect of El Nio or La Nia events in the future, the National Oceanographic and ...

Biology: The Unity and Diversity of Life (MindTap Course List)

In living systems: a. proteins rarely combine with other macromolecules. b. enzymes are always proteins. c. pro...

Biology: The Dynamic Science (MindTap Course List)

(Indicates a review question, which means it requires only a basic understanding of the material to answer. Que...

Inquiry into Physics

A fairground ride spins its occupants inside a flying saucer-shaped container. If the horizontal circular path ...

College Physics

A diet too low in carbohydrate brings about responses that are similar to fasting.

Nutrition

What negative soil effects can result when irrigated agriculture is practiced in regions that experience great ...

Fundamentals of Physical Geography

Draw the cell cycle. What is meant by the term cycle in the cell cycle? What is happening at the S phase and th...

Human Heredity: Principles and Issues (MindTap Course List)

In an endergonic reaction, activation energy is a bit like _______. a. burst of speed b. coasting downhill c. a...

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

REFLECT AND APPLY (a) Is it biologically advantageous that DNA is stable? Why or why not? (b) Is it biologicall...

Biochemistry

To temporarily increase the bodys water content, a person need only. a. consume extra salt. b. consume extra su...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

For exercise 9.2, verify that equations 9.14 and 9.15 are valid for the Hamiltonian you derived.

Physical Chemistry

Using the Molar Mass to Find the Number of Molecules in a Sample of a Compound Calculate the number of carbon t...

Chemistry In Focus

If researchers discovered a method of reducing blood cholesterol to extremely low levels, why might it be undes...

Chemistry for Today: General, Organic, and Biochemistry

A chemist needs exactly 2 moles of KNO3 to make a solution. What mass of solid KNO3 must be used?

Chemistry for Engineering Students

Assume it takes 7.00 minutes to fill a 30.0-gal gasoline tank. (a) Calculate the rate at which the tank is fill...

College Physics

What are the basic beliefs of your environmental worldview? Record your answer. At the end of this course, retu...

Environmental Science (MindTap Course List)

Arrange the following 0.10 M solutions in order from most acidic to most basic. See Appendix 5 for Ka and Kb va...

Chemistry

Draw the full structure of the DNA dinucleotide AG.

Organic Chemistry

What is the common name for the ether whose IUPAC name is ethoxyethane? a. dimethyl ether b. methyl ethyl ether...

General, Organic, and Biological Chemistry

A rigid, massless rod has three particles with equal masses attached to it as shown in Figure P11.37. The rod i...

Physics for Scientists and Engineers

What role does each of the following processes play in helping to implement the three scientific principles of ...

Environmental Science (MindTap Course List)

Match the term listed in Column A with its definition from Column B

Nutrition Through the Life Cycle (MindTap Course List)

Classify anabolism and catabolism as energy-producing or energy-consuming processes.

Organic And Biological Chemistry

A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Hall the crowd hopes he ...

Physics for Scientists and Engineers, Technology Update (No access codes included)

Several alleles affect traits of roses, such as plant form and bud shape. Alleles of one gene govern whether a ...

Biology: The Unity and Diversity of Life (MindTap Course List)

Calculate rG at 25 C for the formation of 1.00 mol of C2H6(g) from C2H4(g) and H2(g). Use this value to calcula...

Chemistry & Chemical Reactivity

Write a brief description of the relationships among each of the following groups of terms or phrases. Answers ...

Introductory Chemistry: An Active Learning Approach

A urethane is a molecule in which a carbonyl group is part of an ester and an amide (it is an amide in one dire...

Organic Chemistry

Figure P39.41 shows the stopping potential versus the incident photon frequency for the photoelectric effect fo...

Physics for Scientists and Engineers with Modern Physics

Which kind of spectrum is produced by a white household incandescent lightbulb?

Foundations of Astronomy (MindTap Course List)

Is there any depth at which water flows in exactly the opposite direction from the direction of the surface win...

Oceanography: An Invitation To Marine Science, Loose-leaf Versin

You increase the temperature of a semiconductor by a few degrees. What happens to the a. density of the ions, b...

Physics for Scientists and Engineers: Foundations and Connections

bartleby
© bartleby 2020