Questions LLC
Login
or
Sign Up
Ask a New Question
Radioactivity
Page 6
Questions (537)
List the three types of radioactivity by increasing ability to penetrate matter.
1 gamma rays 2 beta rays 3 alpha rays ?
1 answer
asked by
Bev
426 views
The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
3 answers
asked anonymously
34 views
The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
3 answers
asked anonymously
36 views
I cant grasp half life - the study guide question is how is half life dating used by scientists -
I have 2 lines to write an
2 answers
asked by
claire
603 views
I'm working on the "Introduction to radioactivity and half-life experiment". It's harder than I thought. Any references that you
2 answers
asked by
Tawanza
662 views
The graph shows the radioactive decay of a bone that is found to contain 1/8 of the carbon-14 found in living animals today.
Appr
1 answer
asked anonymously
36 views
How many half-lives does it take a radioactive substance to decay until only one-eighth of the original substance remains?
a
1 answer
asked anonymously
48 views
How many half-lives does it take a radioactive substance to decay until only one-eighth of the original substance remains?
a
1 answer
asked anonymously
31 views
The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
1 answer
asked anonymously
94 views
Antinium-226 has a half life of 29 hours. If 80 mg of antinium-226 disintegrates over a period of 87 hours, how many mg of
1 answer
asked anonymously
121 views
As a radio active material gets older, does it emit less, more or a constant level of radiation per second?
There is less matter
1 answer
asked by
sean
327 views
A gram of radioactive material has a half-life of one year. After four years how much radioactive material will be left...0g,
1 answer
asked by
Gina
529 views
and if they are the same (refer to the question before by me - copper and copper 64 being the same thing?)is it a radioactive
1 answer
asked by
naomi
403 views
If 250mg of a radioactive element decays to 200mg in 48 hours, find the half-life of the element.
ln(N<sub>o</sub>/N) = kt
1 answer
asked by
Jen
987 views
The half life of cesium-137 is 30 years. Suppose we have a 10-g sample.
a)Find a function that models the mass remaining after t
2 answers
asked by
Jen
1,487 views
I don't understand, according to the periodic table at web elements;
An isotope of Element 116 (292Uuh) was identified in the
1 answer
asked by
Shove
501 views
does anybody knowq any websites that has qustions about half lives (radioactivity)?
<b>Here is a fact sheet. I don't know if it
1 answer
asked by
Mallory
425 views
The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
1 answer
asked by
URMUM
67 views
The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
1 answer
asked anonymously
38 views
The half-life of a certain radioactive element is 800 years. How old is an object if only 12.5% of the radioactive atoms in it
1 answer
asked anonymously
50 views
How much of a radioactive element becomes stable in ONE half-life?
a None of the atoms will become stable b All of the original
1 answer
asked anonymously
23 views
Scientists used radioactive hydrogen to make water. They grew plants using the radioactive water. What happened to the
1 answer
asked anonymously
92 views
The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
1 answer
asked anonymously
72 views
The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
1 answer
asked by
URMUM
51 views
what is the half life of carbon 14?
5730 years 11460 years 17190 years 22920 years
1 answer
asked anonymously
16 views
The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
1 answer
asked by
person
29 views
Two different radioactive isotopes decay to 10% of their respective original amounts. Isotope A does this is 33 days, while
4 answers
asked by
Junior
4,167 views
1. Radioactive parent elements will become stable daughter elements through the process of (1 point)
absolute dating. radioactive
15 answers
asked by
Anonymous
3,304 views
Marie and Pierre Curie noticed burns on their fingers after handling test tubes containing radioactive substances. This
5 answers
asked by
jeje
2,614 views
Iodine-131 is used to destroy thyroid tissue in the treatment of an overactive thyroid. the half-life of iodine-131 is 8.02
5 answers
asked by
monique n
1,681 views
The half-life of C14 radioactive is 5760 yr. After how much time will 200 mg C14 sample be reduced to 25 mg?
4 answers
asked by
yashpal
1,549 views
What is the half-life of an isotope if it decays to 12.5% of its radioactivity in 18 minutes?
4 answers
asked by
fatin
1,562 views
The radioisotope radon-222 has a half-life of 3.8 days. How much of a 98.4 g sample of radon -222 would be left after
4 answers
asked by
Nikkie
1,516 views
You go to the doctor and he gives you 13 milligrams of radioactive dye. After 20 minutes, 4.5 milligrams of dye remain in your
3 answers
asked by
Marina
1,450 views
The half-life of uranium-235 is 700,000,000 years. The half-life of uranium-238 is 4.463 x 1011 years longerWhat is the
1 answer
asked anonymously
45 views
Technetium-99m is a radioactive isotope commonly used in medicine as a radioactive tracer. A radioactive tracer is an isotope
1 answer
asked by
JACK HAMMMMMMER
52 views
The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
1 answer
asked anonymously
45 views
Strontium-90 has half-life of 28 years. if a 1.00-mg sample was stored for 112 years. what mass of Sr-90 would remain?
3 answers
asked by
bob
1,418 views
If a radioactive isotope has a half-life of 20 hours, how many half-lives have occured after 80 hours have passed?
a 3 b 5 c 2 d
1 answer
asked anonymously
56 views
What percent of the original sample of strontium-90 (half-life = 28.9 years) will remain after the following time periods?after
4 answers
asked by
Anonymous
1,385 views
Carbon-14 has a half-life of 5730 . In a plant fossil, you find that the has decayed to 1/32.0 of the original amount. How long
4 answers
asked by
niles28
1,391 views
“Strontium-90 is a pure beta source.” How could a physicist test this statement?
I am stuck on this one, but I was thinking
3 answers
asked by
Charles
1,365 views
a certain radioactive nuclide has a half life of 5.00 hour. Calcuate the decay rate for 1.000 mole of this nuclide
__________
4 answers
asked by
eric
1,243 views
You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physics.
2 answers
asked by
Roseanne
1,196 views
After 150 thousand years, only 1/8 of the original amount of a particular radioactive waste will remain. The half-life of this
6 answers
asked by
Joy
1,202 views
A radioactive substance decays exponentially. A scientist begins with 140 milligrams of a radioactive substance. After 21 hours,
2 answers
asked by
Pek
1,188 views
A 208 g sample of sodium-24 decays to 13.0 g of sodium-24 within 60.0 h. What is the half-life of this radioactive isotope?
3 answers
asked by
Matthew
1,211 views
The half-life of strontium-90 is 28 years. How long will it take a 60 mg sample to decay to a mass of 15 mg?
3 answers
asked by
Caitlyn
1,172 views
Marie and Pierre Curie coined which term to describe the ability of certain elements to give off radiation spontaneously?
Floresc
6 answers
asked by
I Need Help :/
1,152 views
Which radioactive emanations have a charge of -1?
beta particles alpha particles gamma rays neutrons
4 answers
asked by
david
1,151 views
Pages
1
2
3
4
5
6
7
8
9
10
Parent Categories (21)
Atomic and Nuclear Physics
Atomic Physics
Atomic Science
Atomic Structure
Chemistry
Chemistry/Physics
Earth
Earth Science
Grade 11 Physics
Healthcare
Nuclear Physics
Nuclear Science
Physical Science
Physics
Physics or Chemistry
Physics or Chemistry (depending on the context of the website)
Physics or Chemistry (depending on the context)
Physics/ Nuclear Physics
Physics/Chemistry
Radiation
Science