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Sulfur-38 Original amount: 5.0 g Amount left: Total time: 8.61 h Half-life: 2.87 h Number of half-lives: Calcium-47 Original amount: 23.8 g Amount left: Total time: Half-life: 4.5 d Number of half-lives: 7 Phosphorus Original amount: 30.0 g Amount left: Total time: 114.5 d Half-life: 14.3 d Number of half-lives: Carbon-14 Original amount: 60.0 g Amount left: 3.75 g Total time: Half-life: 5730 y Number of half-lives:

Sulfur-38 Original amount: 5.0 g Amount left: Total time: 8.61 h Half-life: 2.87 h Number of half-lives: Calcium-47 Original amount: 23.8 g Amount left: Total time: Half-life: 4.5 d Number of half-lives: 7 Phosphorus Original amount: 30.0 g Amount left: Total time: 114.5 d Half-life: 14.3 d Number of half-lives: Carbon-14 Original amount: 60.0 g Amount left: 3.75 g Total time: Half-life: 5730 y Number of half-lives:

Chemistry
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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**Half-Lives Practice Worksheet** **Sulfur-38** - **Original amount:** 5.0 g - **Amount left:** _______ - **Total time:** 8.61 h - **Half-life:** 2.87 h - **Number of half-lives:** _______ **Phosphorus-32** - **Original amount:** 30.0 g - **Amount left:** _______ - **Total time:** 114.5 d - **Half-life:** 14.3 d - **Number of half-lives:** _______ **Calcium-47** - **Original amount:** 23.8 g - **Amount left:** _______ - **Total time:** _______ - **Half-life:** 4.5 d - **Number of half-lives:** 7 **Carbon-14** - **Original amount:** 60.0 g - **Amount left:** 3.75 g - **Total time:** _______ - **Half-life:** 5730 y - **Number of half-lives:** _______ **Strontium-90** - **Original amount:** 5 g - **Amount left:** 0.3125 g - **Total time:** _______ - **Half-life:** 28.8 y - **Number of half-lives:** _______ **Germanium-66** - **Original amount:** _______ - **Amount left:** 25 g - **Total time:** 10 h - **Half-life:** 2.5 h - **Number of half-lives:** _______ This document shows practice problems for calculating the remaining quantity of various isotopes given their half-lives and the total time lapsed. Each isotope entry provides the original amount, half-life, and either the amount of substance left or the number of half-lives, allowing students to compute the missing values.
Transcribed Image Text:**Half-Lives Practice Worksheet** **Sulfur-38** - **Original amount:** 5.0 g - **Amount left:** _______ - **Total time:** 8.61 h - **Half-life:** 2.87 h - **Number of half-lives:** _______ **Phosphorus-32** - **Original amount:** 30.0 g - **Amount left:** _______ - **Total time:** 114.5 d - **Half-life:** 14.3 d - **Number of half-lives:** _______ **Calcium-47** - **Original amount:** 23.8 g - **Amount left:** _______ - **Total time:** _______ - **Half-life:** 4.5 d - **Number of half-lives:** 7 **Carbon-14** - **Original amount:** 60.0 g - **Amount left:** 3.75 g - **Total time:** _______ - **Half-life:** 5730 y - **Number of half-lives:** _______ **Strontium-90** - **Original amount:** 5 g - **Amount left:** 0.3125 g - **Total time:** _______ - **Half-life:** 28.8 y - **Number of half-lives:** _______ **Germanium-66** - **Original amount:** _______ - **Amount left:** 25 g - **Total time:** 10 h - **Half-life:** 2.5 h - **Number of half-lives:** _______ This document shows practice problems for calculating the remaining quantity of various isotopes given their half-lives and the total time lapsed. Each isotope entry provides the original amount, half-life, and either the amount of substance left or the number of half-lives, allowing students to compute the missing values.
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