×
Log in to StudySoup
Get Full Access to Chemistry: A Molecular Approach - 3 Edition - Chapter 2 - Problem 15e
Join StudySoup for FREE
Get Full Access to Chemistry: A Molecular Approach - 3 Edition - Chapter 2 - Problem 15e

Already have an account? Login here
×
Reset your password

Explain the difference between 2 (the atomic number) and A

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro ISBN: 9780321809247 1

Solution for problem 15E Chapter 2

Chemistry: A Molecular Approach | 3rd Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

4 5 1 269 Reviews
20
3
Problem 15E

Explain the difference between Z (the atomic number) and A (the mass number).

Step-by-Step Solution:
Step 1 of 3

Solution : Here, an experiment by J. J. Thomson, illustrating the evidence that cathode rays consists of negatively charged particles is described. J. J. Thomson, a British S cientist observed that cathode rays are the same regardless of the identity of the cathode material. In 1897, Thomson published a paper which described cathode rays as streams of negatively charged particles. His paper is generally accepted as the discovery of particle of atom, what became known as the electron which earned him a deserved Nobel Prize for physics. Thomson constructed a c athode-ray tube h aving a hole in the anode through which a beam of electrons was passed. Electrically charged plates and a magnet were positioned perpendicular to the electron beam, and a fluorescent screen was located at one end (Refer Figure below).The electric field deflected the rays in one direc tion, and the magnetic field deflected them in the opposite direction, proving beyond that the rays were made up of charged particles carrying a negative charge. Thomson adjusted the strengths of the fields so that the effects balanced each other, allowing the electrons to travel in a straight path to the screen. Knowing the strengths that resulted in the straight path made it was possible to calculate a value of 1.76 × 108 coulombs× per gram for the ratio of the electron’s electrical charge to its mass. The above figure explains the experimental setup, where the cathode rays (electrons) originate at the cathode and are accelerated toward the anode, which has a hole in its center. A narrow beam of electrons passes through the hole and travels to the fluorescent screen.

Step 2 of 3

Chapter 2, Problem 15E is Solved
Step 3 of 3

Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

This textbook survival guide was created for the textbook: Chemistry: A Molecular Approach, edition: 3. The answer to “?Explain the difference between Z (the atomic number) and A (the mass number).” is broken down into a number of easy to follow steps, and 13 words. Chemistry: A Molecular Approach was written by and is associated to the ISBN: 9780321809247. This full solution covers the following key subjects: atomic, negatively, cathode, charged, consist. This expansive textbook survival guide covers 82 chapters, and 9454 solutions. Since the solution to 15E from 2 chapter was answered, more than 305 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 15E from chapter: 2 was answered by , our top Chemistry solution expert on 02/22/17, 04:35PM.

Other solutions

Discover and learn what students are asking









Statistics: Informed Decisions Using Data : Introduction to the Practice of Statistics
?A(n)_________ is a person or object that is a member of the population being studied.


Statistics: Informed Decisions Using Data : Assessing Normality
?A ______ ______ ______is a graph that plots observed data versus normal scores


People also purchased

Related chapters

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

Explain the difference between 2 (the atomic number) and A