General Chemistry: Atoms First
General Chemistry: Atoms First
2nd Edition
ISBN: 9780321809261
Author: John E. McMurry, Robert C. Fay
Publisher: Prentice Hall
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Chapter 12, Problem 12.66SP
Interpretation Introduction

Interpretation:

The decay constant (k) of indium-111 has to be calculated.

Concept introduction:

Half-life time:

It is the time required for the reactant (substrate) concentration reduces to one-half of its initial concentration.

t1/2=0.693kwhere,t1/2-half-lifetimek-rateconstant

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Scientists can determine the age of ancient objects by the method of radiocarbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to radioactive isotope of carbon, 14C, with a half-life of about 5730 years. Vegetation absorbs carbon dioxide through the atmosphere and animal life assimilates 14C through food chains. When a plant or animal dies, it stops replacing its carbon and the amount of ¹4C begins to decrease through radioactive decay. Therefore the level of radioactivity must also decay exponentially. A parchment fragment was discovered that had about 74% as much 14C radioactivity as does plant material on earth today. Estimate the age of the parchment. (Round your answer to the nearest whole number.) yr Need Help? Watch It Additional Materials eBook
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Chapter 12 Solutions

General Chemistry: Atoms First

Ch. 12.6 - Prob. 12.11PCh. 12.6 - Prob. 12.12PCh. 12.6 - Prob. 12.13PCh. 12.6 - Prob. 12.14PCh. 12.7 - Prob. 12.15PCh. 12.9 - Prob. 12.16CPCh. 12.10 - Prob. 12.17PCh. 12.11 - Prob. 12.18PCh. 12.12 - Prob. 12.19PCh. 12.13 - Prob. 12.20PCh. 12.13 - Prob. 12.21PCh. 12.14 - Prob. 12.22CPCh. 12.15 - Prob. 12.23PCh. 12 - The following reaction is first order in A (red...Ch. 12 - Consider the first-order decomposition of A...Ch. 12 - Prob. 12.26CPCh. 12 - The following pictures represent the progress of...Ch. 12 - Prob. 12.28CPCh. 12 - Prob. 12.29CPCh. 12 - The relative rates of the reaction A + B AB in...Ch. 12 - Prob. 12.31CPCh. 12 - Prob. 12.32CPCh. 12 - Prob. 12.33CPCh. 12 - Prob. 12.34SPCh. 12 - Prob. 12.35SPCh. 12 - Prob. 12.36SPCh. 12 - Prob. 12.37SPCh. 12 - Prob. 12.38SPCh. 12 - Prob. 12.39SPCh. 12 - Prob. 12.40SPCh. 12 - The oxidation of 2-butanone (CH3COC2H5) by the...Ch. 12 - Prob. 12.42SPCh. 12 - The reaction 2 NO(g) + 2 H2(g) N2(g) + 2 H2O(g)...Ch. 12 - Bromomethane is converted to methanol in an...Ch. 12 - The oxidation of Br by BRO3, in acidic solution is...Ch. 12 - Prob. 12.46SPCh. 12 - Prob. 12.47SPCh. 12 - Prob. 12.48SPCh. 12 - Prob. 12.49SPCh. 12 - The initial rates listed in the following table...Ch. 12 - Prob. 12.51SPCh. 12 - Prob. 12.52SPCh. 12 - The rearrangement of methyl isonitrile (CH3NC) to...Ch. 12 - Prob. 12.54SPCh. 12 - What is the half-life (in hours) of the reaction...Ch. 12 - Prob. 12.56SPCh. 12 - Prob. 12.57SPCh. 12 - Prob. 12.58SPCh. 12 - What is the half-life (in days) of the reaction in...Ch. 12 - Prob. 12.60SPCh. 12 - Prob. 12.61SPCh. 12 - Prob. 12.62SPCh. 12 - Prob. 12.63SPCh. 12 - Prob. 12.64SPCh. 12 - Prob. 12.65SPCh. 12 - Prob. 12.66SPCh. 12 - Prob. 12.67SPCh. 12 - Prob. 12.68SPCh. 12 - Prob. 12.69SPCh. 12 - Prob. 12.70SPCh. 12 - Prob. 12.71SPCh. 12 - Prob. 12.72SPCh. 12 - Prob. 12.73SPCh. 12 - Prob. 12.74SPCh. 12 - Prob. 12.75SPCh. 12 - Prob. 12.76SPCh. 12 - Prob. 12.77SPCh. 12 - Prob. 12.78SPCh. 12 - Prob. 12.79SPCh. 12 - Rate constants for the reaction NO2(g) + CO(g) ...Ch. 12 - Prob. 12.81SPCh. 12 - Prob. 12.82SPCh. 12 - Prob. 12.83SPCh. 12 - Prob. 12.84SPCh. 12 - Prob. 12.85SPCh. 12 - Prob. 12.86SPCh. 12 - Prob. 12.87SPCh. 12 - Prob. 12.88SPCh. 12 - Prob. 12.89SPCh. 12 - Prob. 12.90SPCh. 12 - Prob. 12.91SPCh. 12 - Prob. 12.92SPCh. 12 - Prob. 12.93SPCh. 12 - The reaction 2 NO2(g) + F2(g) 2 NO2F(g) has a...Ch. 12 - Prob. 12.95SPCh. 12 - Prob. 12.96SPCh. 12 - Prob. 12.97SPCh. 12 - Prob. 12.98SPCh. 12 - Prob. 12.99SPCh. 12 - Prob. 12.100SPCh. 12 - Sulfur dioxide is oxidized to sulfur trioxide in...Ch. 12 - Consider the following mechanism for the...Ch. 12 - Prob. 12.103SPCh. 12 - Prob. 12.104CHPCh. 12 - Prob. 12.105CHPCh. 12 - Prob. 12.106CHPCh. 12 - Consider three reactions with different values of...Ch. 12 - Prob. 12.108CHPCh. 12 - Prob. 12.109CHPCh. 12 - Prob. 12.110CHPCh. 12 - When the temperature of a gas is raised by 10 C,...Ch. 12 - Prob. 12.112CHPCh. 12 - Prob. 12.113CHPCh. 12 - Prob. 12.114CHPCh. 12 - Prob. 12.115CHPCh. 12 - Prob. 12.116CHPCh. 12 - Prob. 12.117CHPCh. 12 - Prob. 12.118CHPCh. 12 - Consider the following concentrationtime data for...Ch. 12 - Prob. 12.120CHPCh. 12 - Prob. 12.121CHPCh. 12 - Prob. 12.122CHPCh. 12 - Prob. 12.123CHPCh. 12 - Assume that you are studying the first-order...Ch. 12 - Prob. 12.125CHPCh. 12 - Prob. 12.126CHPCh. 12 - Prob. 12.127CHPCh. 12 - Prob. 12.128CHPCh. 12 - Use the following initial rate data to determine...Ch. 12 - Prob. 12.130CHPCh. 12 - The following experimental data were obtained in a...Ch. 12 - Prob. 12.132CHPCh. 12 - Prob. 12.133CHPCh. 12 - Prob. 12.134CHPCh. 12 - Prob. 12.135CHPCh. 12 - Polytetrafluoroethylene (Teflon) decomposes when...Ch. 12 - Values of Ea = 6.3 kJ/mol and A = 6.0 108 M1 s1...Ch. 12 - Prob. 12.138MPCh. 12 - The rate constant for the decomposition of gaseous...Ch. 12 - Prob. 12.140MPCh. 12 - Prob. 12.141MPCh. 12 - Prob. 12.142MPCh. 12 - Prob. 12.143MP
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