Chemistry (7th Edition)
Chemistry (7th Edition)
7th Edition
ISBN: 9780321943170
Author: John E. McMurry, Robert C. Fay, Jill Kirsten Robinson
Publisher: PEARSON
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Chapter 19, Problem 19.24P
Interpretation Introduction

Interpretation:

To calculate how many years ago naturally occurring uranium contained 3% U235 

Concept Introduction:

Half-life is defined as the time taken for a radioactive substance to decay to half of its original amount.

When two percentages of a radioactive substance in naturally occurring ore are given, one of the past and the one of present, then the ratio of old percentage : present percentage gives a fraction.
This fraction can be used to calculate how many half-lives have elapsed from the formula:

  fraction=(12)n where n= number of half lives elapsed
This n when multiplied by the half life provides the age of the substance.

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Chapter 19 Solutions

Chemistry (7th Edition)

Ch. 19 - Prob. 19.11PCh. 19 - Prob. 19.12ACh. 19 - Prob. 19.13PCh. 19 - Prob. 19.14ACh. 19 - Prob. 19.15PCh. 19 - Prob. 19.16ACh. 19 - Prob. 19.17PCh. 19 - Prob. 19.18PCh. 19 - Prob. 19.19ACh. 19 - Prob. 19.20PCh. 19 - Prob. 19.21ACh. 19 - Prob. 19.22PCh. 19 - Prob. 19.23PCh. 19 - Prob. 19.24PCh. 19 - Prob. 19.25PCh. 19 - Prob. 19.26PCh. 19 - Prob. 19.27CPCh. 19 - Prob. 19.28SPCh. 19 - Prob. 19.29SPCh. 19 - Prob. 19.30SPCh. 19 - Prob. 19.31SPCh. 19 - Prob. 19.32SPCh. 19 - Prob. 19.33SPCh. 19 - Prob. 19.34SPCh. 19 - Prob. 19.35SPCh. 19 - Prob. 19.36SPCh. 19 - Prob. 19.37SPCh. 19 - Prob. 19.38SPCh. 19 - Prob. 19.39SPCh. 19 - Prob. 19.40SPCh. 19 - Prob. 19.41SPCh. 19 - Prob. 19.42SPCh. 19 - Prob. 19.43SPCh. 19 - Prob. 19.44SPCh. 19 - Prob. 19.45SPCh. 19 - Prob. 19.46SPCh. 19 - Prob. 19.47SPCh. 19 - Prob. 19.48SPCh. 19 - Prob. 19.49SPCh. 19 - Prob. 19.50SPCh. 19 - Prob. 19.51SPCh. 19 - Prob. 19.52SPCh. 19 - Prob. 19.53SPCh. 19 - Prob. 19.54SPCh. 19 - Prob. 19.55SPCh. 19 - Prob. 19.56SPCh. 19 - Prob. 19.57SPCh. 19 - Prob. 19.58SPCh. 19 - Prob. 19.59SPCh. 19 - Prob. 19.60SPCh. 19 - Prob. 19.61SPCh. 19 - Prob. 19.62SPCh. 19 - Prob. 19.63SPCh. 19 - Prob. 19.64SPCh. 19 - Prob. 19.65SPCh. 19 - Prob. 19.66SPCh. 19 - Prob. 19.67SPCh. 19 - Prob. 19.68SPCh. 19 - Prob. 19.69SPCh. 19 - Prob. 19.70SPCh. 19 - Prob. 19.71SPCh. 19 - Prob. 19.72SPCh. 19 - Prob. 19.73SPCh. 19 - Prob. 19.74SPCh. 19 - Prob. 19.75SPCh. 19 - Prob. 19.76SPCh. 19 - Prob. 19.77SPCh. 19 - Prob. 19.78SPCh. 19 - Prob. 19.79SPCh. 19 - Prob. 19.80SPCh. 19 - Prob. 19.81SPCh. 19 - Prob. 19.82SPCh. 19 - Prob. 19.83SPCh. 19 - Prob. 19.84SPCh. 19 - Prob. 19.85SPCh. 19 - Prob. 19.86SPCh. 19 - Prob. 19.87SPCh. 19 - Prob. 19.88SPCh. 19 - Prob. 19.89SPCh. 19 - Prob. 19.90SPCh. 19 - Prob. 19.91SPCh. 19 - Prob. 19.92SPCh. 19 - Prob. 19.93SPCh. 19 - Prob. 19.94SPCh. 19 - Prob. 19.95SPCh. 19 - Prob. 19.96CPCh. 19 - Prob. 19.97CPCh. 19 - Prob. 19.98CPCh. 19 - Prob. 19.99CPCh. 19 - Prob. 19.100CPCh. 19 - Prob. 19.101CPCh. 19 - Prob. 19.102CPCh. 19 - Prob. 19.103CPCh. 19 - Prob. 19.104CPCh. 19 - Prob. 19.105CPCh. 19 - Prob. 19.106CPCh. 19 - Prob. 19.107CPCh. 19 - Prob. 19.108CPCh. 19 - Prob. 19.109CPCh. 19 - Prob. 19.110CPCh. 19 - Prob. 19.111CPCh. 19 - Prob. 19.112CPCh. 19 - Prob. 19.113MPCh. 19 - Prob. 19.114MPCh. 19 - Prob. 19.115MP
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