University:
Thomas Jefferson University
Course:
CHEM 103 | Chemistry I
Academic year:

2024
Views:

226

Pages:

1
Author:

Imani H.

20.9 Radioactive Decay Radioactive decoy tan paskice 3 types of pachles Alpha positive Beta negative Gamma no charge. The half life (tu) is the true it takes for half of the original amount to decay. 204 Translation & Nuclear Energy Nuclear masssion is the conversion of one suclide into another, Nuclear fission is the breaking of a larger nucleus into smaller pieces. typically One neutron is used to initiate fission, 43 neuhons are produced This produces a huge amount of energy fleads to a chain reachon. The avant of maternal necessary to sostain a reaction is called the critical res To use nocicar fisson as a source of energy the chain reaction must be controlled. This is done by using control rods to absorb some of the neutrons. Bucikar upon combines light elements to produce heavier ones & can be also used to generate energy. Comunion of hydrogen to hesum is the most common bosom rea 42 20. Brological Effects of Radiation lenining radiation includes ultraviolet (uv) X-rays. lonizing radiation can break bonds or remove ekchons in biological Molecules, causing a wide range of dawage. How to calculate percent albundance Copper has 2 isotopes, 63 Cu & 65 Cu, with masses 62.9296 $64.9278 amu. What is the percent abundance for each Isotope? Ang Mass 63.55 (frompenodic table) let = fraction of 63 1-x= fraction of 65 Cu 63.65 x (62.929%) + (1-x) (64.9278).. 63.6562.9296x + 64.9278-64.9278 63.65-64-9278 x= -1.38/-1.9362-0.713 0.713 x 100 = 71.3% 63 Co. 71.3%. Cu 28.71. avg Mass of Ga 69.72 X=MiP-M2P2 Ga 68.9256 "Ga: 70.9247 69.72-68.9256 (x) + 70.9247(1-x) x=0.602 "Ga 1-x=7Ga: 70.9247 25 X 80.50% abundant, Mass = 25.03 27 X 19.50% abundant, mass 26.98 25.41 25.031.8050) + 26.986.1950) Avg mass: 151.97 151 Eυ= 160.9199 $15320 : 152.9212 151.97 150.9199 (x) + 152.9212(1-X) 47.5% 151.80 150.99 (x) + 153.03(1-x) 153.03 (1-x)

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