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

Author Question: A radioactive substance has a decay rate of 2.1% per minute. Of an initial amount of 1000 g of the ... (Read 79 times)

serike

  • Hero Member
  • *****
  • Posts: 542
on: Jun 16, 2021

Question 1

A certain radioactive isotope has a half-life of approximately 2000 years. How many years to the nearest year would be required for a given amount of this isotope to decay to 45% of that amount?
◦ 1725 years
◦ 1100 years
◦ 2304 years
◦ 2259 years

Question 2

A radioactive substance has a decay rate of 2.1% per minute.   Of an initial amount of  1000 g of the substance, how much will remain after 70 minutes?
◦ 257.5 g
◦ 310.4 g
◦ 206.9 g
◦ 229.9 g
Calculus and Its Applications ¦ Bittinger, Ellenbogen, Surgent ¦ 11th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by serike on Jun 16, 2021

polinasid

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jun 16, 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


serike

  • Member
  • Posts: 542
Reply 2 on: Jun 16, 2021
Great answer, keep it coming :)

Hdosisshsbshs

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Effects of growth rate on development. Effects of growth rate on development.
Amount of Energy Released by Earthquakes of Different Magnitudes Amount of Energy Released by Earthquakes of Different Magnitudes
Because of the high physical activity and the amount of energy expended by the brains of 2- to ... Because of the high physical activity and the amount of energy expended by the brains of 2- to ...
Label used to indicate a class IV controlled substance. Label used to indicate a class IV controlled substance.
Which reaction below represents Th decay by alpha emission? Which reaction below represents Th decay by alpha emission?
What amount was invested 35 years ago at 7% compounded semiannually if the value of the ... What amount was invested 35 years ago at 7% compounded semiannually if the value of the ...
Video: Factors that increase metabolic rate and heat production

For a complete list of videos, visit our video library