Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:14. An original sample of a radioisotope had armass
of 10 grams. After 2 days, 5 grams of the
radioisotope remains unchanged. What is the
half-life of this radioisotope?
11.
Given the reaction:
Al + He-X+n
A. 1 day
B. 2 days
C. 5 days
D. 4 days
When the equation is correctly balances, the
nucleus represented by X is
A AI
B. S
D.
Nuclear Chem
Page 2
31
2 /2
Page

Transcribed Image Text:3.
In the reaction Li +jaHe+X, the species
represented by X is
A. H
B. H
C. He
D. He
In the reaction X +H Li+He, the nucleus
represented by X is
9.
A. Li
B "B
C Be
D C
229
Rn
He + X, the term X
In the equation
rpresents
10.
218
84
26 Ra
D.
A.
226
C.
Ra
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