Find study content
Learning Materials

Discover learning materials by subject, university or textbook.

Explanations

Textbooks

Exams
All Subjects

Anthropology

Archaeology

Architecture

Art and Design

Bengali

Biology

Business Studies

Greek

Chemistry

Chinese

Combined Science

Computer Science

Economics

Engineering

English

English Literature

Environmental Science

French

Geography

German

History

Hospitality and Tourism

Human Geography

Italian

Japanese

Law

Macroeconomics

Marketing

Math

Media Studies

Medicine

Microeconomics

Music

Nursing

Nutrition and Food Science

Physics

Polish

Politics

Psychology

Religious Studies

Sociology

Spanish

Sports Sciences

Translation

All Subjects

Biology

Business Studies

Chemistry

Combined Science

Computer Science

Economics

English

Environmental Science

Geography

History

Math

Physics

Psychology

Sociology

EXAM TYPES

GCSE

IGCSE

AS

A Level

International A Level

University Admissions Tests

GCSE SUBJECTS

GCSE 1

GCSE 2

GCSE 3

GCSE 4

GCSE 5

SOME-TEXT

IGCSE SUBJECTS

IGCSE 1

AS SUBJECTS

AS 1

A Level SUBJECTS

A Level 1

International A Level SUBJECTS

International A Level 1

University Admissions Tests SUBJECTS

University Admissions Tests 1
Features
Features

Discover all of these amazing features with a free account.

Flashcards

Vaia AI

Notes

Study Plans

Study Sets
What’s new?

Flashcards
Study your flashcards with three learning modes.

Study Sets
All of your learning materials stored in one place.

Notes
Create and edit notes or documents.

Study Plans
Organise your studies and prepare for exams.
Resources
Discover

All the hacks around your studies and career - in one place.

Find a job

Find a degree

Student Deals

Magazine

Mobile App
Featured

Magazine
Trusted advice for anyone who wants to ace their studies & career.

Job Board
The largest student job board with the most exciting opportunities.

Vaia Deals
Verified student deals from top brands.

Our App
Discover our mobile app to take your studies anywhere.

Go to App

Learning Materials

Features

Discover

Chapter 11: Q68E (page 520)

For the carbon cycle to become established, helium-4 nuclei must fuse to form beryllium-8. Calculate Q for this reaction.

Short Answer

Expert verified

The value of $Q = - 0.08756 M e V$

Step by step solution

01

Given data and concept

The nuclear reaction for this process:

${}_{2}^{4}H e + {}_{2}^{4}H e \to {}_{4}^{8}B e + γ$

Mass of helium = $4.002603 u$

Mass of beryllium = $8.005305 u$

The energy released in this decay depends upon the mass difference between the parent and daughter nucleus.

We can calculate the kinetic energy Q of the emitted particle using the formula:

$Q = (m_{p} - m_{D}) c^{2}$

In this formula $m_{P}$ is the mass of the parent nucleus. And $m_{D}$ is the mass of the daughter nucleus.

02

Finding Q

By substituting numerical values, we have:

$Q = (2 m_{H e} - m_{B e}) c^{2} Q = (2 \times 4.002603 u - 8.00530 u) 931.5 \frac{M e V}{u} Q = - 0.08756 M e V$

Therefore, the value of $Q = - 0.08756 M e V$

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

why does fission of heavy nuclei tend to produce free neutrons?

To remove one electron from helium requires $24.6 e V$ . and removing its second takes $54.5 e V$ . The ionization energy of hydrogen is $13.6 e V$ . When applied to helium -4 by what percentage is equation (11-5) in error due to its ignoring of electronic binding energies?

Determine Q for the reaction ${}_{3}^{7}L i + {}_{1}^{1}H \to {}_{4}^{7}B e + {}_{0}^{1}n$

Calcium-41 decays by electron capture.

(a) Find $Q$ for the decay.

(b) Show that calcium-41 cannot decay by $β^{+}$ emission.

By classical, hard sphere assumption, what smallest value of $A$ would make one nucleon surrounded. Relate your answer with figure 11.14.

See all solutions

Recommended explanations on Physics Textbooks

Fields in Physics

Read Explanation

Solid State Physics

Read Explanation

Electricity

Read Explanation

Mechanics and Materials

Read Explanation

Modern Physics

Read Explanation

Dynamics

Read Explanation

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free