The half-life years of Cobalt-60 has to be determined. Concept introduction: Half-life: The time taken for one-half of the nuclei in the sample to decay. The half-life of the sample is independent of the quantity of radioactive material and depends on the decay constant of the nuclide in the sample.

Question

Consider the following two acid-base reactions: OH OHI Based on what you know about the compounds and their acidity, which direction would you expect both of these reactions to proceed? Show your reasoning. A pKa table has been provided in case you need it. Functional group Example pka CHA -50 Alkane -35 Amine : NH3 Alkyne RH 25 Water HO-H 169 16 10 Protonated amines NH 10 5 Carboxylic acids OH Hydrochloric acid HCI A chemist intends to run the following reaction on the three substrates shown below: H₂O R-CI product room temp. Cl Cl (1) (2) (3) They find one will react quickly, one slowly, and one will not react at all. Which is which, and why? HINT: What is the reaction they're trying to do? Does that mechanism tell you anything about why something would be favored?

Answer 1

Question

Chapter 20.4, Problem 20.8E

Interpretation Introduction

Interpretation:

The half-life years of Cobalt-60 has to be determined.

Concept introduction:

Half-life: The time taken for one-half of the nuclei in the sample to decay. The half-life of the sample is independent of the quantity of radioactive material and depends on the decay constant of the nuclide in the sample.

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