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View History Bookmarks Window Help 85% cal Testing x Wiley PLUS New Tab wileyplus.com/edugen/student/mainfr.uni ge & Canada Nepal .Nepa M North Seattle Comm. Home I Log In wile IP MasteringEngineerin Log In to Canvas the homework. wiley PLUS: My wlleyeLus I Help I Contact us I Lag ou Jespersen, Chemistry, 6e General chemistry New Edition (6th) (Chemistry 139 and Chemistry 161 Assignment Gradebook ent FULL SCREEN PRINTER VERSION BACK NEXT antra Concentration and Reaction Rate To3/so3 The rate of the following reaction: Radioactive decay of 208 is characterized by the rate constant k o.239 year 1. What is the half-life (in for this reaction at the same conditions when the initial concentrations are 0.0313 M? (Round your answer to 3 significant figures.) Hint: The units of the rate constant are linked with the order of reaction. years The number of significant digits is set to 3; the tolerance is +/-2%Explanation / Answer
half life = ln2/rate constant = 0.693/0.239 = 2.9 years
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