Chemistry In Focus
Chemistry In Focus
7th Edition
ISBN: 9781337670425
Author: Tro
Publisher: Cengage
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Chapter 8, Problem 8.5YT
Interpretation Introduction

Interpretation:

The age of the rock is to be determined.

Concept Introduced:

U-238 decays with the half-life of 4.5×109 years, through a number of intermediates, forming lead as the end product.

The oldest rock of the solar system has a composition of approximately 50% uranium and 50% lead, which suggests that Earth is 4.5 billion years old.

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