Chemistry In Focus
Chemistry In Focus
6th Edition
ISBN: 9781305084476
Author: Tro, Nivaldo J., Neu, Don.
Publisher: Cengage Learning
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Chapter 8, Problem 8.3YT
Interpretation Introduction

Interpretation:

The amount of Rn222 which is left after 19.1 days, and the number of alpha particles which are emitted within the house during the given period are to be calculated.

Concept Introduction:

Half-life time of a radioactive substance is the time in which the parent nuclei is reduced to half of its initial amount.

Alpha emission occurs when an unstable radioactive nucleus emits a particle containing 2 protons and 2 neutrons.

One mole contains 6.022×1023 atoms. It can be expressed as:

1 mol=6.022×1023 atom

The conversion factor is (6.022×10231mol).

One mole of any substance has a mass equal to its molar mass.

One milligram is equal to 103 g. The conversion factor for grams from milligrams is (10-3 g1 mg).

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