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Can someone please help with question 3

Can someone please help with question 3

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter11: Rate Of Reaction
Section: Chapter Questions
Problem 38QAP: Consider the first-order decomposition of phosgene at a certain temperature. COCl2(g)productsIt is...
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Can someone please help with question 3

Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock is found to contain 84.1% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of U – 238.) Part A How old is the rock? Express your answer using two significant figures. ? t = yr Submit Request Answer
Transcribed Image Text:Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock is found to contain 84.1% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of U – 238.) Part A How old is the rock? Express your answer using two significant figures. ? t = yr Submit Request Answer
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