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Nuclear Chemistry
Page 3
Questions (324)
Given the following nuclear reaction:
224/88 Ra ----> 4/2 He + a/z X Column A 1. What is the atomic mass of the new atom?: What
3 answers
asked by
URMUM
38 views
Which statement best explains why mass is not conserved in a nuclear change?
Some of the matter is converted to energy. Some of
3 answers
asked by
Pls help
68 views
Which phrase describes transmutation?
the conversion of protons to neutrons through nuclear changes the conversion of protons to
3 answers
asked by
Pls help
59 views
The half-life of uranium-235 is 700,000,000 years. The half-life of uranium is 4.463 x 10^11 years longer. What is the half-life
3 answers
asked anonymously
107 views
A researcher wishes to extract
140 La from 140 Ba. She obtains a 1000 MBq virgin Ba-140 sample and must wait until the maximum
2 answers
asked by
amy
564 views
Assuming that at the beginning of time (big bang; creation of the universe) there
were equal numbers of U-235 and U-238 atoms
5 answers
asked by
terry
932 views
I am confused about how to claculate half lives. Can you explain. ( How much of a 400 gm sample od gold is left after 10.8 days
6 answers
asked by
Krys
548 views
What was the original mass of the Bismuth-212 sample if, after 121 seconds, it now weighs 2.64 grams, given that Bismuth-212 has
5 answers
asked by
AR AR AR
106 views
Grade 12 Chemistry
Complete the following equations: e) 239 94 Pu + 4 2 He = ? + 3 1 0 n
3 answers
asked anonymously
43 views
Polonium has a large, unstable nucleus. Through which process is it most likely to become stable?(1 point)
11 answers
asked by
lol
130 views
Pick the radioactive isotope in each set.
23/11 20/9 Explain your choice. a)its atomic number is greater than 83 b)it has fewer n
2 answers
asked by
ashley
564 views
the half life of F18 is 2.089x10^-4yrs. How long would it take (in days) for F18 to decrease to 78.71% of its initial amount?
1 answer
asked by
pookie
379 views
the activity of a sample of carbon has one-eighth of the initial activity. carbon-14 has a half-life of 5730 yr. how old is the
3 answers
asked by
Mimi
410 views
Use the equation to complete the activity.
219 86Rn→215 84Po+α 86219Rn→ 84215Po+α The nuclear equation shows the
3 answers
asked anonymously
38 views
Sam is comparing the half-life of two isotopes of uranium. The half-life of Uranium-238 is 4.5×109 years. The half-life of
3 answers
asked by
Boo <3
82 views
Please assist me in answer this question
please show me all the formulas used and the units and how to convert them if needed.
5 answers
asked by
Kate
526 views
The amount of time it takes for half of a sample to disappear is:
a fusion b nuclear chemistry c fission d half-life
3 answers
asked anonymously
90 views
what is the definition if nuclear
1 answer
asked by
ashley
365 views
1) Nobelium has a half-life of 1 hour. If you start with 1 kg, how much will you have by this time tomorrow?
2) You have 90 g of
1 answer
asked by
kayla
432 views
The amount of time it takes for half of a sample to disappear is:
a nuclear chemistry b half-life c fusion d fission
3 answers
asked anonymously
42 views
If the following element undergoes alpha decay, which element does it change into?
234/90th a Uranium (U) b Francium (Fr) c
3 answers
asked anonymously
100 views
Given the following nuclear reaction:
Column A 1. What is the atomic mass of the new atom?: What is the atomic mass of the new
3 answers
asked anonymously
142 views
Use the equation to complete the activity.
219 / 86Rn→215 / 84Po+α The nuclear equation shows the transmutation of a form of
3 answers
asked by
Blue Berry
192 views
HELP!!! I have like 20 of these kinds of questions on my homework and no clue how to solve them.
Electron capture transforms 40 K
3 answers
asked by
Jonathan
504 views
If the following element undergoes alpha decay, which element does it change into?
234/90Th a Uranium (U) b Francium (Fr) c
3 answers
asked anonymously
42 views
Which of the following is a nuclear change?
a) Fusion of helium b) Combustion of methane c) Reaction of sodium sulphate and
4 answers
asked anonymously
32 views
What will be the remaining mass of cobalt – 60 after undergoing three half life cycles?
180 g 2.50 g 30 g 1.25 g
1 answer
asked anonymously
22 views
What conclusion can be inferred from a 3.0 picogram sample of curium– 245 with a half-life of 8500 years?
The age of the
1 answer
asked anonymously
55 views
the rate of a nuclear reaction can be changed by??
i know adding a catalyst to a normal reaction can but to a nuclear im not
1 answer
asked by
luis
644 views
The amount of time it takes for half of a sample to disappear is:
a half-life b fusion c nuclear chemistry d fission
1 answer
asked anonymously
24 views
What is the half life of Carbon 14 according to the graph below?
* 1 point Captionless Image 5730 years 11460 years 17190 years
1 answer
asked anonymously
73 views
I have: the half life of U-238 is 4.5 x 10^9 yr. A sample of rock of mass 1.6g produces 29 disintegrations per second. find
3 answers
asked by
Nancy
1,833 views
Examine the information.
Isotope B has a half-life of 3 days. A scientist measures out 100 grams of this substance. After 6 days
4 answers
asked by
PLEASE help
1,807 views
Radioactive radium has a half-life of approximately 1599 years. What percent of a given amount remains after 100 years?
4 answers
asked by
rachel
1,799 views
Sodium-24, a beta-emitter used in diagnosing circulation problems, has a half-life of 15 hours.Write the balanced nuclear
4 answers
asked by
Anonymous
1,748 views
2.The data in the table show the amount of a 500 g sample of sodium-24 over time.
Make a graph of the data (remember to label all
3 answers
asked by
holly
1,676 views
Write a balanced nuclear equation for the positron emission of each of the following radioactive isotopes:
3 answers
asked by
lana
1,534 views
A pure sample of tritium, 3H, was prepared and sealed in a container for a number of years. Tritium undergoes â decay with a
4 answers
asked by
Queen
1,511 views
The half-life of hafnium-156 is 0.025 s. how long will it take a 560 g sample to decay to one-fourth it's original mass?
4 answers
asked by
Jacob
1,447 views
Which statement best describes the effect of radioactive decay on a nucleus?
Responses The resulting nucleus is less stable than
1 answer
asked by
MOM
39 views
What does a nuclear change involve?
1 answer
asked anonymously
16 views
nucleus of oxygen-15 undergoes electron capture. Write out the reaction equation and determine the identity of the daughter
3 answers
asked by
tiffany
1,328 views
Thallium-208 has a half life of 3.053 min. How long will it take for 120.0 g to decay to 7.50 g?
2 answers
asked by
Jacob
1,272 views
the half life of tritium is 12.5 years. How much of a 1 g sample will remain after 25 years
1 answer
asked by
Brenda
1,286 views
The data in the table show the amount of a 500 g sample of sodium-24 over time.
Make a graph of the data (remember to label all
4 answers
asked by
liz
1,258 views
If the half-life of uranium-235 is 7.04 (times) 10 (to the eight power) 8 y and 12.5 g of uranium-235 remain after 2.82 (times)
1 answer
asked by
David
1,142 views
An isotope has a half-life of 97 years. how much of a 19-gram sample is left after 150 years?
2 answers
asked by
Miles
1,091 views
The half-life of radon-222 is 3.82 days. If a sample of gas contains 4.38ug of radon-222, how much will remain in the sample
2 answers
asked by
Leyah
1,078 views
the half-life of polonium-218 is 3.0 minutes. what percentage of the original sample remains after 4 half-lives?
4 answers
asked by
melissa
1,066 views
the nuclide 232 Th 90 is radioactive. when one of the atoms decays, a series of alpha and beta particle emission occurs, taking
3 answers
asked by
Gabe
1,026 views
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Parent Categories (7)
Chemistry
Physical Science
Physics
Radioactive Isotopes
Science
Science and Technology
Science Education