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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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AaBb AABBC AaBbCc AaBbCc Emphasis Heading 1 Heading 2 Heading 3 Heading 4 三、、。 Font Paragraph REPORT SHEET LAB Nuclear Chemistry 8. A. Nuclear Equations Complete the nuclear equations by filling in the correct symbols: 131 53 96 40 99 Mo + 42 63 Cu + 29 24 -> Na Не B. Radiation Measurement 1. Time (min) Counts 1 34 1 38 Times New Rom 1 34 BIUD 2. Average background count counts/min (cpm) C. Radiation Levels from Radioactive Sources 1. Radiation 2. Counts/min 3. Average 4. Radiation from Source (cpm) Background (spm) Source (spm Mineral 1 615 Mineral 2 3293 Plate 6719 Smoke detector 489 f 9 7 of 522 words DR P Type here to search DELL BOLL
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Effective The table of parent-daughter isotopes shows three different isotope pairs that are used in radioisotope dating. Examine the chart and answer the following questions. Half-Life Isotope Daughter of Parent Dating Range (y) Parent uranium-235 lead-207 710 milion >10 million 10 000 to 3 billion potassium 40 argon 40 1.3 bilion 22. Lead-207 is called the daughter of uranium-235. What does this mean? carbon-14 nitrogen-14 5730 up to 50 000 23. How old is a rock sample that oontains uranium-235 and lead-207 in equal amounts? 24. The age of Earth was first established in 1953 when Claire C. Patterson of the California Institute of Technology used a uranium-lead clock to analyze rock. In comparing amounts of uranium-235 with lead-207, he established that about 8 half-lives of uranium-207 had passed since the rock formed. Using this data, estimate the age of Earth. 25. lodine-131 is a radioactive substance that can be used to treat certain thyroid conditions. It has a half-life of 8…
Resources D Feedback Resume of a5> Attempts Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive source is placed inside a patientrs body to treat cancer. Brachytherapy allows the use of a higher than normal dose to be placed near the tumor while kowering the risk of damage to healthy tissue. Iridium-192 is often used in the head or breast. Use the radioactive decay curve of iridium- 192 to answer the three questions Ti It the initial sample is 7.25 , what mass of the original iridium 192 remains afher 5 days?
A wooden artifact from a Chinese temple has a 14C14C activity of 39.0 counts per minute as compared with an activity of 58.2 counts per minute for a standard of zero age. From the half-life for 14C14C decay, 5730 yryr, determine the age of the artifact. Express age in 2 sig figs.
q req 2req بھر میں 3 E D Q C Complete the following nuclear bombardment equation by filling in the nuclear symbol for the missing species. 235U+ on Submit Answer $ 4 R F V % 5 Retry Entire Group 9 more group attempts remaining T [Review Topics] [References] Use the References to access important values if needed for this question. G Cengage Learning | Cengage Technical Support 6 B MacBook Pro Y H & 7 N E U J * 00 8 I M - 0 + Sr+ 2n 9 K e O < B X -O L ** P A - V Previous Email Instructor P { + 11 [ Next Save and Exit 11 ? 1 1
Bismuth-210 is beta emitter with a half-life of 5.0 days. Part A If a sample contains 1.5 g of Bi-210 (atomic mass = 209.984105 amu), how many beta emissions would occur in 13.9 days? Express your answer using two significant figures. 195] ΑΣΦ Submit Part B Request Answer Submit ? If a person's body intercepts 5.3 % of those emissions, to what dose of radiation (in Ci) is the person exposed? Express your answer using two significant figures. VE ΑΣΦ Request Answer beta decays ? Ci