This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A sample of wood from an Egyptian mummy case gives a count of 7.0 cpm/gC (counts per minute per gram ... (Read 17 times)

jasdeep_brar

  • Hero Member
  • *****
  • Posts: 569
on: Mar 21, 2021

Question 1

A radioactive sample has an initial activity of 2.00 × 106 cpm (counts per minute), and after 4.0 days, its activity is 9.0 × 105 cpm. What is its activity after 31 days?

◦ 8.3 cpm
◦ 4.1 × 103 cpm
◦ 4.9 × 102 cpm
◦ 1.0 × 10–9 cpm
◦ None of these are correct.

Question 2

A sample of wood from an Egyptian mummy case gives a count of 7.0 cpm/gC (counts per minute per gram of carbon). How old is the wood? (The initial decay rate of is 15.3 cpm/g C, and its half-life is 5730 years.)

◦ 3233 yr
◦ 8965 yr
◦ 6465 yr
◦ 7515 yr
◦ None of these are correct.
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by jasdeep_brar on Mar 21, 2021

owenfalvey

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


jasdeep_brar

  • Member
  • Posts: 569
Reply 2 on: Mar 21, 2021
:D TYSM

kusterl

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

giant wood spider giant wood spider
Population genetics sample question Population genetics sample question
Mummy Portrait of a Man, Faiyum, Egypt. Mummy Portrait of a Man, Faiyum, Egypt.
Sample tiered drug formulary for antibiotics. Sample tiered drug formulary for antibiotics.
Sample root cause analysis: Duplicate dose of a narcotic analgesic. Sample root cause analysis: Duplicate dose of a narcotic analgesic.
A 2.000 g sample of water contains 11.19% H by mass and 88.81% O by mass. What mass of H will ... A 2.000 g sample of water contains 11.19% H by mass and 88.81% O by mass. What mass of H will ...
Video: Inflammation and Fever

For a complete list of videos, visit our video library