PLEASE HELP ME WITH THESE TWO QUESTIONS. THANK YOU IN ADVANCE. QUESTION 2 An isotope has 40 protons and 50 neutrons. Choose the correct values of the atomic number Z and the mass number A for this isotope. A) Z=50; A=40 B) Z=50; A=90 C) Z=40; A=50 D) Z=40; A=90 QUESTION 3 Given a half-life of a radioactive source, X is 40 years. Calculate the percentage remaining of X after 80 years?
PLEASE HELP ME WITH THESE TWO QUESTIONS. THANK YOU IN ADVANCE. QUESTION 2 An isotope has 40 protons and 50 neutrons. Choose the correct values of the atomic number Z and the mass number A for this isotope. A) Z=50; A=40 B) Z=50; A=90 C) Z=40; A=50 D) Z=40; A=90 QUESTION 3 Given a half-life of a radioactive source, X is 40 years. Calculate the percentage remaining of X after 80 years?
Astronomy
1st Edition
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Chapter16: The Sun: A Nuclear Powerhouse
Section: Chapter Questions
Problem 38E: Raymond Davis Jr.’s neutrino detector contained approximately 1030 chlorine atoms. During his...
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PLEASE HELP ME WITH THESE TWO QUESTIONS. THANK YOU IN ADVANCE.
QUESTION 2
An isotope has 40 protons and 50 neutrons. Choose the correct values of the atomic number Z and the mass number A for this isotope.
A) Z=50; A=40
B) Z=50; A=90
C) Z=40; A=50
D) Z=40; A=90
QUESTION 3
Given a half-life of a radioactive source, X is 40 years. Calculate the percentage remaining of X after 80 years?
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