Question
In: Chemistry
If 39% of a radioactive element is converted in 1000 days, How much will be converted...
If 39% of a radioactive element is converted in 1000 days, How much will be converted in 1200 days?
A) 55%
B) 45%
C) 39%
D) 32%
E) 2.5%
Solutions
Expert Solution
Correct answer is option (B) 45%
Explanation is given in following figure:
There
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queen_honey_blossom answered 2 years agoRelated Solutions
An unknown radioactive element decays into non-radioactive substances. In 340 days the radioactivity of a sample...
An unknown radioactive element decays into non-radioactive
substances. In 340 days the radioactivity of a sample decreases by
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If there is 10umol of the radioactive isotope 32P (half-life 14 days) at t=0, how much...
If there is 10umol of the radioactive isotope
32P (half-life 14 days) at t=0, how much 32P
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I already know the answers, I have the student companion guide
to my biochemistry textbook. It does not tell me how to work out
the problem though. If anyone could help it would be
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The answers are (a) 7mmol (b) 5umol (c) 3.5mmol and (d)
0.3umol
When studying radioactive material, a nuclear engineer found that over 365 days, 1,000,000 radioactive atoms decayed...
When studying radioactive material, a nuclear engineer found
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b. Find the probability that on a given day, 50 radioactive
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Thanks in advance!
1a) Why are radioactive half-lives independent of temperature? 1b) Element ‘X’ has several isotopes. How are...
1a) Why are radioactive half-lives independent of
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1b) Element ‘X’ has several isotopes. How are they different and
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3. a. A researcher wants to study how long (in days) patients aged 30-39 who are...
3.
a. A researcher wants to study how long (in days) patients aged
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spend in the hospital before being discharged. Preliminary data
suggests that
? = 4 days is a safe assumption. Assuming the recovery times have
standard deviation 4 days (which would say that virtually all
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formula
? = ?^2 * ?^2 / ?^2
To find...
In a survey, 39 people were asked how much they spent on their child's last birthday...
In a survey, 39 people were asked how much they spent on their
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Calculate, state, and interpret a 95% confidence interval to
estimate the mean amount of money parents spend on their child's
birthday gift. Round to the nearest 100th where necessary.
1. When a radioactive element decays, it is because the balance of neutrons and protons inside...
1. When a radioactive element decays, it is because the balance
of neutrons and protons inside the nucleus was unstable. Explain
what happens in each of these kinds of decay to make the nucleus
more stable (these are the three most common decay types):
a. Fission
b. Beta-decay ( β )
c. Alpha-decay ( α )
Which of these is more often associated with the production of
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Why do you think that is?
The element technetium (atomic number 43) is radioactive and one of its isotopes, 99Tc, is used...
The element technetium (atomic number 43) is radioactive and one
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The isotope is usually obtained in the form of the pertechnetate
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in a lower oxidation state. Reduction can be carried out using Sn2+
in an acidic solution. The skeleton equation is TcO4- + Sn2+ → Tc4+
+ Sn4+ (acidic solution) Balance the equation by the ion–electron
method.
The element technetium (atomic number 43) is radioactive and one of its isotopes, 99Tc, is used...
The element technetium (atomic number 43) is radioactive and one
of its isotopes, 99Tc, is used in medicine for diagnostic imaging.
The isotope is usually obtained in the form of the pertechnetate
anion, TcO4-, but its use sometimes requires the technetium to be
in a lower oxidation state. Reduction can be carried out using Sn2+
in an acidic solution. The skeleton equation is TcO4- + Sn2+ → Tc4+
+ Sn4+ (acidic solution) Balance the equation by the ion–electron
method.
What is the half-life (T1/2) of a radioactive element with the following conditions? -Initial Activity =...
What is the half-life (T1/2) of a radioactive element with the
following conditions?
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